175 FNUS56 KSTO 310803 FWFSTO Fire Weather Planning Forecast for Interior Northern California National Weather Service Sacramento CA 1202 AM PST Wed Dec 31 2025 .DISCUSSION... Low clouds and fog are forecast to continue through today and tomorrow in the Valley. High pressure will break down tomorrow as the next wave of active weather moves into the region bringing rain to the Valley and foothills, mountain snow, and gusty southerly winds. Snow levels are forecast to remain above 8500 feet Thursday and Friday, then fall to around 6500 feet Friday night and Saturday morning, falling further to 5000-5500 feet Saturday evening. Heaviest snow forecast on Friday and Saturday. Valley and Foothill rains heaviest Thursday and Friday, along with strongest south winds Friday. This system is not as wet or impactful as our last storm system at this time. CAZ213-020000- Eastern Portion of Shasta-Trinity NF- 1202 AM PST Wed Dec 31 2025 .TONIGHT... * Sky/Weather............Rain. * Min Temperature........44-49 lower elevations...except 37-44 higher elevations. * 24 HR Trend..........MISSING. * Max Humidity...........95-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Drainage winds up to 5 mph. * Ridges/Upr Slopes....Variable winds up to 5 mph. * CWR....................60 percent. * Mixing Height..........700 ft AGL. * Chance of thunder......0 percent. .NEW YEARS DAY... * Sky/Weather............Rain. * Max Temperature........50-55 lower elevations...except 44-49 higher elevations. * 24 HR Trend..........MISSING. * Min Humidity...........85-98 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Upslope winds up to 5 mph. * Ridges/Upr Slopes....Variable winds up to 7 mph becoming southeast up to 7 mph in the afternoon. * CWR....................90 percent. * Mixing Height..........700 ft AGL. * Chance of thunder......2 percent. .THURSDAY NIGHT... * Sky/Weather............Rain. * Min Temperature........46-51 lower elevations...except 40-46 higher elevations. * Max Humidity...........86-100 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Drainage winds up to 5 mph becoming southeast 4 to 10 mph after midnight. * Ridges/Upr Slopes....South winds 5 to 11 mph. * Mixing Height..........700 ft AGL. * CWR....................90 percent. * Chance of thunder......5 percent. .FRIDAY... * Sky/Weather............Rain until late afternoon, then rain showers and a slight chance of thunderstorms late in the afternoon. * Max Temperature........52-57 lower elevations...except 44-50 higher elevations. * Min Humidity...........79-94 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds 11 to 17 mph with local gusts up to 30 mph. * Ridges/Upr Slopes....South winds 11 to 17 mph with local gusts up to 30 mph. * Mixing Height..........3100 ft AGL. * CWR....................90 percent. * Chance of thunder......17 percent. $$ CAZ214-020000- Burney Basin and Northeast Plateau in Shasta County Including Northwest Lassen NF north of Lassen NP- 1202 AM PST Wed Dec 31 2025 .TONIGHT... * Sky/Weather............Rain. * Min Temperature........35-40. * 24 HR Trend..........MISSING. * Max Humidity...........95-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Drainage winds up to 5 mph. * Ridges/Upr Slopes....Variable winds up to 5 mph. * CWR....................30 percent. * Mixing Height..........700 ft AGL. * Chance of thunder......0 percent. .NEW YEARS DAY... * Sky/Weather............Rain. * Max Temperature........44-49. * 24 HR Trend..........MISSING. * Min Humidity...........88-96 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Upslope winds up to 5 mph. * Ridges/Upr Slopes....Variable winds up to 7 mph. * CWR....................40 percent. * Mixing Height..........900 ft AGL. * Chance of thunder......1 percent. .THURSDAY NIGHT... * Sky/Weather............Rain. * Min Temperature........39-44. * Max Humidity...........85-100 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds 4 to 9 mph. * Ridges/Upr Slopes....South winds 4 to 9 mph. * Mixing Height..........700 ft AGL. * CWR....................60 percent. * Chance of thunder......3 percent. .FRIDAY... * Sky/Weather............Rain. * Max Temperature........50-55 lower elevations...except 45-50 higher elevations. * Min Humidity...........79-94 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds 9 to 15 mph. * Ridges/Upr Slopes....South winds 9 to 15 mph with local gusts up to 30 mph. * Mixing Height..........2300 ft AGL. * CWR....................50 percent. * Chance of thunder......10 percent. $$ CAZ215-020000- Northern Sacramento Valley to Southern Tehama County Line Below 1000 Ft- 1202 AM PST Wed Dec 31 2025 .TONIGHT... * Sky/Weather............Rain. * Min Temperature........45-50. * 24 HR Trend..........MISSING. * Max Humidity...........95-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds..........Variable winds less than 5 mph. * CWR....................60 percent. * Mixing Height..........600 ft AGL. * Chance of thunder......1 percent. .NEW YEARS DAY... * Sky/Weather............Rain. * Max Temperature........51-56. * 24 HR Trend..........MISSING. * Min Humidity...........95-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds..........North winds up to 5 mph shifting to the southeast up to 7 mph in the afternoon. * CWR....................80 percent. * Mixing Height..........800 ft AGL. * Chance of thunder......3 percent. .THURSDAY NIGHT... * Sky/Weather............Rain. * Min Temperature........47-52. * Max Humidity...........95-100 percent. * 20-Foot Winds..........Southeast winds 6 to 12 mph. Local gusts up to 25 mph after midnight. * Mixing Height..........600 ft AGL. * CWR....................80 percent. * Chance of thunder......8 percent. .FRIDAY... * Sky/Weather............Rain early in the morning, then showers and a slight chance of thunderstorms in the late morning and afternoon. * Max Temperature........52-57. * Min Humidity...........88-100 percent. * 20-Foot Winds..........South winds 14 to 20 mph with local gusts up to 40 mph. * Mixing Height..........3100 ft AGL. * CWR....................80 percent. * Chance of thunder......14 percent. $$ CAZ216-020000- Central Sacramento Valley in Glenn, Colusa, Yuba, Northern Sutter, and Butte County Below 1000 Ft- 1202 AM PST Wed Dec 31 2025 .TONIGHT... * Sky/Weather............Rain. * Min Temperature........44-49. * 24 HR Trend..........MISSING. * Max Humidity...........95-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds..........North winds up to 6 mph. * CWR....................80 percent. * Mixing Height..........800 ft AGL. * Chance of thunder......1 percent. .NEW YEARS DAY... * Sky/Weather............Rain. * Max Temperature........52-57. * 24 HR Trend..........MISSING. * Min Humidity...........95-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds..........North winds up to 6 mph shifting to the southeast up to 7 mph in the afternoon. * CWR....................80 percent. * Mixing Height..........600 ft AGL. * Chance of thunder......4 percent. .THURSDAY NIGHT... * Sky/Weather............Rain. * Min Temperature........49-54. * Max Humidity...........95-100 percent. * 20-Foot Winds..........Southeast winds 7 to 13 mph. * Mixing Height..........500 ft AGL. * CWR....................60 percent. * Chance of thunder......9 percent. .FRIDAY... * Sky/Weather............Showers and a slight chance of thunderstorms until late afternoon, then rain late in the afternoon. * Max Temperature........54-59. * Min Humidity...........81-96 percent. * 20-Foot Winds..........Breezy. Southeast winds 13 to 25 mph with local gusts up to 35 mph. * Mixing Height..........3300 ft AGL. * CWR....................70 percent. * Chance of thunder......16 percent. $$ CAZ217-020000- Southern Sacramento Valley in Yolo- Sacramento Far Western Placer, southern Sutter and Solano County Below 1000 Ft- 1202 AM PST Wed Dec 31 2025 .TONIGHT... * Sky/Weather............Rain. * Min Temperature........47-52. * 24 HR Trend..........MISSING. * Max Humidity...........95-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds..........Northeast winds up to 7 mph. * CWR....................80 percent. * Mixing Height..........700 ft AGL. * Chance of thunder......2 percent. .NEW YEARS DAY... * Sky/Weather............Rain. * Max Temperature........55-60. * 24 HR Trend..........MISSING. * Min Humidity...........95-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds..........East winds 4 to 9 mph. * CWR....................60 percent. * Mixing Height..........600 ft AGL. * Chance of thunder......4 percent. .THURSDAY NIGHT... * Sky/Weather............Rain. * Min Temperature........52-57. * Max Humidity...........92-100 percent. * 20-Foot Winds..........Southeast winds 7 to 13 mph with local gusts up to 25 mph. * Mixing Height..........700 ft AGL. * CWR....................30 percent. * Chance of thunder......6 percent. .FRIDAY... * Sky/Weather............Rain likely early in the morning, then showers likely and a slight chance of thunderstorms in the late morning and early afternoon. Rain late in the afternoon. * Max Temperature........54-59. * Min Humidity...........80-95 percent. * 20-Foot Winds..........South winds 12 to 18 mph with local gusts up to 30 mph. * Mixing Height..........3600 ft AGL. * CWR....................40 percent. * Chance of thunder......17 percent. $$ CAZ218-020000- Carquinez Strait and Delta- 1202 AM PST Wed Dec 31 2025 .TONIGHT... * Sky/Weather............Rain. * Min Temperature........47-52. * 24 HR Trend..........MISSING. * Max Humidity...........95-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds..........Northeast winds 5 to 11 mph. * CWR....................80 percent. * Mixing Height..........700 ft AGL. * Chance of thunder......2 percent. .NEW YEARS DAY... * Sky/Weather............Rain. * Max Temperature........55-60. * 24 HR Trend..........MISSING. * Min Humidity...........94-99 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds..........East winds 5 to 11 mph. * CWR....................40 percent. * Mixing Height..........800 ft AGL. * Chance of thunder......4 percent. .THURSDAY NIGHT... * Sky/Weather............Rain. * Min Temperature........52-57. * Max Humidity...........94-100 percent. * 20-Foot Winds..........Southeast winds 6 to 12 mph. Local gusts up to 25 mph after midnight. * Mixing Height..........600 ft AGL. * CWR....................10 percent. * Chance of thunder......6 percent. .FRIDAY... * Sky/Weather............Rain likely early in the morning, then showers likely and a slight chance of thunderstorms in the late morning and early afternoon. Rain late in the afternoon. * Max Temperature........56-61. * Min Humidity...........86-97 percent. * 20-Foot Winds..........Southeast winds 12 to 18 mph. * Mixing Height..........2700 ft AGL. * CWR....................30 percent. * Chance of thunder......14 percent. $$ CAZ219-020000- Northern San Joaquin Valley in San Joaquin and Stanislaus Counties Below 1000 ft- 1202 AM PST Wed Dec 31 2025 .TONIGHT... * Sky/Weather............Rain. * Min Temperature........47-52. * 24 HR Trend..........MISSING. * Max Humidity...........95-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds..........Southeast winds 4 to 9 mph. * CWR....................80 percent. * Mixing Height..........500 ft AGL. * Chance of thunder......3 percent. .NEW YEARS DAY... * Sky/Weather............Rain. * Max Temperature........56-61. * 24 HR Trend..........MISSING. * Min Humidity...........93-98 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds..........Southeast winds 6 to 12 mph with local gusts up to 20 mph. * CWR....................40 percent. * Mixing Height..........1400 ft AGL. * Chance of thunder......5 percent. .THURSDAY NIGHT... * Sky/Weather............Mostly cloudy. Rain likely early in the evening, then a chance of rain in the late evening and overnight. * Min Temperature........52-57. * Max Humidity...........84-99 percent. * 20-Foot Winds..........Southeast winds 9 to 15 mph with local gusts up to 25 mph. * Mixing Height..........800 ft AGL. * CWR....................10 percent. * Chance of thunder......5 percent. .FRIDAY... * Sky/Weather............Cloudy. A chance of showers in the morning. A slight chance of thunderstorms through the day. Rain in the afternoon. * Max Temperature........57-62. * Min Humidity...........76-91 percent. * 20-Foot Winds..........Southeast winds 13 to 19 mph with local gusts up to 30 mph. * Mixing Height..........4300 ft AGL. * CWR....................10 percent. * Chance of thunder......14 percent. $$ CAZ263-279-020000- Southeast Edge Shasta-Trinity NF and Western Portions of Tehama- Glenn Unit-Eastern Mendocino NF- 1202 AM PST Wed Dec 31 2025 .TONIGHT... * Sky/Weather............Rain. * Min Temperature........43-48 lower elevations...except 37-42 higher elevations. * 24 HR Trend..........MISSING. * Max Humidity...........90-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Northeast winds up to 8 mph. * Ridges/Upr Slopes....Northeast winds up to 8 mph. * CWR....................70 percent. * Mixing Height..........900 ft AGL. * Chance of thunder......1 percent. .NEW YEARS DAY... * Sky/Weather............Rain. * Max Temperature........50-55 lower elevations...except 43-49 higher elevations. * 24 HR Trend..........MISSING. * Min Humidity...........88-97 percent lower elevations...except 78-85 percent high elevations. * 24 HR Trend..........MISSING. * 20-Foot Winds.......... * Valleys/Lwr Slopes...East winds 4 to 9 mph. * Ridges/Upr Slopes....Northeast winds up to 8 mph shifting to the southeast 4 to 9 mph in the afternoon. * CWR....................70 percent. * Mixing Height..........900 ft AGL. * Chance of thunder......2 percent. .THURSDAY NIGHT... * Sky/Weather............Rain. * Min Temperature........46-51 lower elevations...except 40-46 higher elevations. * Max Humidity...........81-96 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Drainage winds up to 5 mph becoming southeast 5 to 11 mph after midnight. * Ridges/Upr Slopes....South winds 5 to 11 mph increasing to southeast 14 to 20 mph after midnight. Local gusts up to 30 mph. * Mixing Height..........800 ft AGL. * CWR....................60 percent. * Chance of thunder......7 percent. .FRIDAY... * Sky/Weather............Rain. * Max Temperature........51-56 lower elevations...except 42-48 higher elevations. * Min Humidity...........76-91 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Southeast winds 14 to 20 mph with local gusts up to 30 mph. * Ridges/Upr Slopes....Breezy. Southeast winds 16 to 22 mph with local gusts up to 35 mph. * Mixing Height..........2600 ft AGL. * CWR....................80 percent. * Chance of thunder......13 percent. $$ CAZ266-020000- Northern Sierra Foothills from 1000 to 3000 Ft. Includes portions of Shasta-Trinity and Butte Units- 1202 AM PST Wed Dec 31 2025 .TONIGHT... * Sky/Weather............Rain. * Min Temperature........44-49. * 24 HR Trend..........MISSING. * Max Humidity...........95-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Drainage winds up to 5 mph. * Ridges/Upr Slopes....Variable winds up to 5 mph. * CWR....................80 percent. * Mixing Height..........600 ft AGL. * Chance of thunder......1 percent. .NEW YEARS DAY... * Sky/Weather............Rain. * Max Temperature........51-56. * 24 HR Trend..........MISSING. * Min Humidity...........87-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds up to 7 mph. * Ridges/Upr Slopes....South winds up to 7 mph. * CWR....................100 percent. * Mixing Height..........900 ft AGL. * Chance of thunder......4 percent. .THURSDAY NIGHT... * Sky/Weather............Rain. * Min Temperature........47-52. * Max Humidity...........85-100 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds 8 to 14 mph with local gusts up to 30 mph. * Ridges/Upr Slopes....South winds 8 to 14 mph with local gusts up to 30 mph. * Mixing Height..........600 ft AGL. * CWR....................100 percent. * Chance of thunder......8 percent. .FRIDAY... * Sky/Weather............Rain early in the morning, then showers and a slight chance of thunderstorms in the late morning and afternoon. * Max Temperature........52-57. * Min Humidity...........77-92 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds 14 to 20 mph with local gusts up to 35 mph. * Ridges/Upr Slopes....South winds 14 to 20 mph with local gusts up to 35 mph. * Mixing Height..........3200 ft AGL. * CWR....................90 percent. * Chance of thunder......16 percent. $$ CAZ220-267-020000- Southern Motherlode From 1000 to 3000 Ft. Includes portions of Toulumne-Calaveras Unit- Northern Motherlode From 1000 to 3000 Ft. Includes portions of Nevada-Yuba-Placer-Amador and Eldorado Units- 1202 AM PST Wed Dec 31 2025 .TONIGHT... * Sky/Weather............Rain. * Min Temperature........45-50. * 24 HR Trend..........MISSING. * Max Humidity...........95-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Drainage winds up to 5 mph. * Ridges/Upr Slopes....Variable winds up to 5 mph. * CWR....................90 percent. * Mixing Height..........500 ft AGL. * Chance of thunder......3 percent. .NEW YEARS DAY... * Sky/Weather............Rain. * Max Temperature........53-58. * 24 HR Trend..........MISSING. * Min Humidity...........93-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Southeast winds 4 to 9 mph. * Ridges/Upr Slopes....Southeast winds 4 to 9 mph. * CWR....................80 percent. * Mixing Height..........1200 ft AGL. * Chance of thunder......7 percent. .THURSDAY NIGHT... * Sky/Weather............Rain. * Min Temperature........49-54. * Max Humidity...........85-100 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Southeast winds 7 to 13 mph. * Ridges/Upr Slopes....Southeast winds 7 to 13 mph. * Mixing Height..........600 ft AGL. * CWR....................50 percent. * Chance of thunder......7 percent. .FRIDAY... * Sky/Weather............Showers likely in the morning. A slight chance of thunderstorms through the day. Rain in the afternoon. * Max Temperature........53-58. * Min Humidity...........82-97 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds 10 to 16 mph with local gusts up to 30 mph. * Ridges/Upr Slopes....South winds 10 to 16 mph. * Mixing Height..........3400 ft AGL. * CWR....................50 percent. * Chance of thunder......19 percent. $$ CAZ268-020000- Northern Sierra Including Lassen NP and Plumas and Lassen NF/S West of the Sierra Crest (West of Evans Peak-Grizzly Peak- Beckworth Peak)- 1202 AM PST Wed Dec 31 2025 .TONIGHT... * Sky/Weather............Rain. * Min Temperature........34-42 lower elevations...except 32-37 higher elevations. * 24 HR Trend..........MISSING. * Max Humidity...........95-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds.......... * Valleys/Lwr Slopes...East winds 4 to 10 mph. * Ridges/Upr Slopes....East winds 4 to 10 mph. * CWR....................70 percent. * Mixing Height..........500 ft AGL. * Chance of thunder......0 percent. .NEW YEARS DAY... * Sky/Weather............Rain. * Max Temperature........41-49. * 24 HR Trend..........MISSING. * Min Humidity...........85-99 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds 5 to 11 mph. * Ridges/Upr Slopes....South winds 5 to 11 mph. * CWR....................90 percent. * Mixing Height..........1000 ft AGL. * Chance of thunder......3 percent. .THURSDAY NIGHT... * Sky/Weather............Rain. * Min Temperature........36-44. * Max Humidity...........84-99 percent...except 94-100 percent in the high mountain valleys. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds 13 to 19 mph. * Ridges/Upr Slopes....South winds 13 to 19 mph. * Mixing Height..........700 ft AGL. * CWR....................90 percent. * Chance of thunder......6 percent. .FRIDAY... * Sky/Weather............At lower elevations, rain...heavy at times late in the afternoon. At higher elevations, rain...heavy at times and snow...heavy at times late in the afternoon. Rain early in the morning. Showers and a slight chance of thunderstorms in the late morning and early afternoon. * Max Temperature........44-49 lower elevations...except 38-44 higher elevations. * Min Humidity...........77-92 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds 14 to 26 mph with local gusts up to 35 mph. * Ridges/Upr Slopes....Breezy. South winds 15 to 27 mph with local gusts up to 40 mph. * Mixing Height..........3200 ft AGL. * CWR....................90 percent. * Chance of thunder......14 percent. $$ CAZ221-269-020000- Stanislaus NF West of the Sierra Crest- Northern Sierra Including the Tahoe and Eldorado NF/S West of the Sierra Crest- 1202 AM PST Wed Dec 31 2025 .TONIGHT... * Sky/Weather............Rain. * Min Temperature........43-48 lower elevations...except 33-41 higher elevations. * 24 HR Trend..........MISSING. * Max Humidity...........92-100 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Southeast winds up to 7 mph. * Ridges/Upr Slopes....Southeast winds up to 7 mph. * CWR....................90 percent. * Mixing Height..........600 ft AGL. * Chance of thunder......2 percent. .NEW YEARS DAY... * Sky/Weather............Rain. * Max Temperature........50-55 lower elevations...except 38-47 higher elevations. * 24 HR Trend..........MISSING. * Min Humidity...........80-95 percent. * 24 HR Trend..........MISSING. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds 4 to 10 mph. * Ridges/Upr Slopes....South winds 4 to 10 mph. * CWR....................90 percent. * Mixing Height..........1500 ft AGL. * Chance of thunder......6 percent. .THURSDAY NIGHT... * Sky/Weather............At lower elevations, rain until early morning, then a chance of rain early in the morning. At higher elevations, rain and snow until early morning, then a chance of rain and snow early in the morning. * Min Temperature........44-49 lower elevations...except 33-41 higher elevations. * Max Humidity...........78-93 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds 8 to 14 mph. * Ridges/Upr Slopes....South winds 8 to 14 mph. * Mixing Height..........1100 ft AGL. * CWR....................50 percent. * Chance of thunder......6 percent. .FRIDAY... * Sky/Weather............At lower elevations, a chance of rain early in the morning, then showers in the late morning and early afternoon. A slight chance of thunderstorms in the late morning and afternoon. At higher elevations, a chance of rain and snow early in the morning, then showers likely in the late morning and early afternoon. Snow likely...heavy at times and a slight chance of thunderstorms in the late morning and afternoon. Rain late in the afternoon. * Max Temperature........49-54 lower elevations...except 37-45 higher elevations. * Min Humidity...........72-87 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds 11 to 17 mph with local gusts up to 30 mph. * Ridges/Upr Slopes....South winds 11 to 17 mph with local gusts up to 30 mph. * Mixing Height..........2700 ft AGL. * CWR....................50 percent. * Chance of thunder......16 percent. $$ .Extended... ...Shasta County Mountains and Coastal Range .FRIDAY NIGHT...Showers and a slight chance of thunderstorms. Lows 33 to 41. South winds 15 to 25 mph. .SATURDAY...Rain and snow. Highs 39 to 46. South winds 15 to 25 mph. .SATURDAY NIGHT...Rain and snow. Lows 32 to 40. South winds 5 to 15 mph. .SUNDAY...Rain and snow. Highs 39 to 46. South winds 5 to 10 mph. .SUNDAY NIGHT...Rain and snow likely. Lows 31 to 40. Southeast winds 5 to 10 mph. .MONDAY...Rain and snow likely...heavy at times. Highs 39 to 47. South winds 5 to 10 mph. .MONDAY NIGHT...Mostly cloudy with a chance of rain and snow. Lows 29 to 39. South winds up to 10 mph. ...Northern Sierra and Lassen Park .FRIDAY NIGHT...Showers and a slight chance of thunderstorms. Lows 33 to 41. South winds 15 to 25 mph. .SATURDAY...Rain. Highs 39 to 46. South winds 15 to 25 mph. .SATURDAY NIGHT...Rain and snow. Lows 31 to 40. South winds 5 to 15 mph. .SUNDAY...Rain and snow. Highs 39 to 47. South winds 5 to 10 mph. .SUNDAY NIGHT...Rain and snow likely. Lows 30 to 39. Variable less than 5 mph. .MONDAY...Rain and snow likely. Highs 40 to 48. South winds 5 to 10 mph. .MONDAY NIGHT...Mostly cloudy with a chance of rain and snow. Lows 28 to 38. Variable less than 5 mph. ...Sierra Nevada Foothills .FRIDAY NIGHT...Showers and a slight chance of thunderstorms. Lows 42 to 47. South winds 15 to 25 mph. .SATURDAY...Rain. Highs 47 to 52. South winds 15 to 25 mph. .SATURDAY NIGHT...Rain. Lows 40 to 45. Southeast winds 5 to 15 mph. .SUNDAY...Rain likely. Highs 47 to 52. Southeast winds 5 to 10 mph. .SUNDAY NIGHT...Rain likely. Lows 40 to 45. Southeast winds up to 10 mph. .MONDAY...Rain likely. Highs 48 to 53. Southeast winds 5 to 10 mph. .MONDAY NIGHT...Mostly cloudy with a chance of rain. Lows 38 to 43. Southeast winds 5 to 10 mph. ...Central Valley and Delta .FRIDAY NIGHT...Rain. Lows 48 to 53. South winds 15 to 25 mph. .SATURDAY...Rain. Highs 51 to 56. South winds 15 to 25 mph. .SATURDAY NIGHT...Rain likely. Lows 45 to 50. Southeast winds 5 to 15 mph. .SUNDAY...Rain likely. Highs 50 to 55. Southeast winds 5 to 10 mph. .SUNDAY NIGHT...Mostly cloudy with a chance of rain. Lows 44 to 49. Southeast winds 5 to 10 mph. .MONDAY...Mostly cloudy with a chance of rain. Highs 50 to 55. Southeast winds 5 to 10 mph. .MONDAY NIGHT...Cloudy with a chance of rain. Lows 41 to 46. Southeast winds 5 to 10 mph. $$