741 FNUS55 KTWC 310835 FWFTWC Fire Weather Planning Forecast for Southeast Arizona National Weather Service Tucson AZ 135 AM MST Wed Dec 31 2025 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 20-FOOT WIND FORECAST OF 'LIGHT WINDS' INDICATES MAINLY TERRAIN DRIVEN WINDS +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ .DISCUSSION... Gusty east winds continue early this morning diminishing to mainly less than 15 mph by this afternoon into early next week. A weather system will bring periods of rain showers this afternoon afternoon into Friday morning. Any snow will be at or above mountain tops. Minimum relative humidity values will remain elevated through the upcoming week, ranging from 35-55 percent in the valleys and 50-80 percent in the mountains. RH's peak Thursday and Friday. Temperatures will mostly be above normal levels this week. AZZ150-311000- Arizona Fire Weather Zone 150 Sonoran FDRA-Most of Pima County-South Central Pinal County- Tohono O'odham Nation-Tucson Metropolitan area-TDC- 135 AM MST Wed Dec 31 2025 .TODAY... * Sky/Weather..............Mostly cloudy (50-60 pct) then becoming partly cloudy (45-55 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Max Temperature..........68 to 78 degs. 24 hr Trend...........Up 3 to 6 degs. * Min Humidity.............26 to 36 pct. 24 hr Trend...........Down 1 to 4 pct. * Wind (20 ft/10-min avg)..Northeast 10 to 20 mph. * 10000 ft MSL Wind........Southwest 5 to 10 mph. * Mixing height............2941 ft AGL. * Transport winds..........East 17 to 19 knots. * Ventilation Category.....Good (55879 knot-ft). .TONIGHT... * Sky/Weather..............Mostly cloudy (60-70 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Min Temperature..........49 to 59 degs. 24 hr Trend...........Up 3 to 6 degs. * Max Humidity.............48 to 58 pct. 24 hr Trend...........Down 3 to 7 pct. * Wind (20 ft/10-min avg)..East 10 to 15 mph. * 10000 ft MSL Wind........Southwest 10 to 15 mph. .WEDNESDAY... * Sky/Weather..............Mostly cloudy (70-80 pct). Slight chance of showers. * Chance of Precip.........30 pct. * Chance of Thunder........0 pct. * Max Temperature..........65 to 75 degs. 24 hr Trend...........Down 1 deg. * Min Humidity.............33 to 43 pct. 24 hr Trend...........Up 9 to 13 pct. * Wind (20 ft/10-min avg)..Southeast 10 to 15 mph. * 10000 ft MSL Wind........South around 15 mph increasing to around 25 mph in the afternoon. * Mixing height............1549 ft AGL. * Transport winds..........Southeast 11 to 12 knots. * Ventilation Category.....Marginal (18588 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .NEW YEARS DAY...Mostly cloudy. Chance of showers. Lows 50 to 60. Highs 65 to 75. Light winds. Minimum Humidity 55 to 65 pct. .FRIDAY...Partly cloudy. Chance of showers. Lows 48 to 58. Highs 64 to 74. Light winds. Minimum Humidity 50 to 60 pct. .SATURDAY...Partly cloudy. Lows 44 to 54. Highs 66 to 76. Light winds. Minimum Humidity 38 to 48 pct. .SUNDAY...Mostly cloudy. Lows 44 to 54. Highs 65 to 75. .MONDAY...Mostly cloudy. Slight chance of showers. Lows 45 to 55. Highs 64 to 74. NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT LOCATION (2550 MSL) $$ AZZ151-311000- Arizona Fire Weather Zone 151 Western half Desert Grasslands FDRA including elevations up to 5500 feet in Southeast corner of Pinal County- Extreme Eastern Pima County-Western third of Cochise County- Santa Cruz County-TDC- 135 AM MST Wed Dec 31 2025 .TODAY... * Sky/Weather..............Partly cloudy (45-55 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Max Temperature..........61 to 71 degs. 24 hr Trend...........Up 2 to 5 degs. * Min Humidity.............30 to 40 pct. 24 hr Trend...........Little change. * Wind (20 ft/10-min avg)..East 10 to 20 mph. * 10000 ft MSL Wind........Southwest 5 to 10 mph. * Mixing height............2860 ft AGL. * Transport winds..........East 19 to 20 knots. * Ventilation Category.....Good (57200 knot-ft). .TONIGHT... * Sky/Weather..............Mostly cloudy (60-70 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Min Temperature..........41 to 51 degs. 24 hr Trend...........Up 4 to 8 degs. * Max Humidity.............56 to 66 pct. 24 hr Trend...........Down 4 to 8 pct. * Wind (20 ft/10-min avg)..East 10 to 15 mph. * 10000 ft MSL Wind........West 5 to 10 mph. .WEDNESDAY... * Sky/Weather..............Mostly cloudy (65-75 pct). Chance of showers. * Chance of Precip.........40 pct. * Chance of Thunder........0 pct. * Max Temperature..........61 to 71 degs. 24 hr Trend...........Little change. * Min Humidity.............36 to 46 pct. 24 hr Trend...........Up 5 to 9 pct. * Wind (20 ft/10-min avg)..Southeast 10 to 15 mph. * 10000 ft MSL Wind........South 15 to 20 mph. * Mixing height............2992 ft AGL. * Transport winds..........Southeast 11 to 14 knots. * Ventilation Category.....Good (41888 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .NEW YEARS DAY...Mostly cloudy. Chance of showers. Lows 45 to 55. Highs 60 to 70. Light winds. Minimum Humidity 60 to 70 pct. .FRIDAY...Partly cloudy. Chance of showers. Lows 42 to 52. Highs 60 to 70. Light winds. Minimum Humidity 51 to 61 pct. .SATURDAY...Partly cloudy. Lows 37 to 47. Highs 63 to 73. Light winds. Minimum Humidity 36 to 46 pct. .SUNDAY...Mostly cloudy. Lows 40 to 50. Highs 62 to 72. .MONDAY...Mostly cloudy. Slight chance of showers. Lows 40 to 50. Highs 61 to 71. NOTE TO USERS - ZONE 151 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE BUENOS AIRES N.W.R. LOCATION (3500 MSL) $$ AZZ152-311000- Arizona Fire Weather Zone 152 Eastern half Desert Grasslands FDRA including elevations up to 5500 feet in Southwest Graham County and Eastern two thirds of Cochise County-Southern San Carlos Reservation- Southern Greenlee County below 5000 feet-TDC- 135 AM MST Wed Dec 31 2025 .TODAY... * Sky/Weather..............Partly cloudy (40-50 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Max Temperature..........55 to 65 degs. 24 hr Trend...........Up 2 to 5 degs. * Min Humidity.............30 to 40 pct. 24 hr Trend...........Up 1 pct. * Wind (20 ft/10-min avg)..East 10 to 20 mph. * 10000 ft MSL Wind........Southeast around 5 mph shifting to the southwest in the afternoon. * Mixing height............1936 ft AGL. * Transport winds..........East 21 knots. * Ventilation Category.....Good (40656 knot-ft). .TONIGHT... * Sky/Weather..............Mostly cloudy (45-55 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Min Temperature..........35 to 45 degs. 24 hr Trend...........Up 3 to 6 degs. * Max Humidity.............63 to 73 pct. 24 hr Trend...........Down 5 to 9 pct. * Wind (20 ft/10-min avg)..East 10 to 15 mph. * 10000 ft MSL Wind........West 5 to 10 mph. .WEDNESDAY... * Sky/Weather..............Mostly cloudy (55-65 pct). Slight chance of showers. * Chance of Precip.........20 pct. * Chance of Thunder........0 pct. * Max Temperature..........58 to 68 degs. 24 hr Trend...........Up 3 to 6 degs. * Min Humidity.............29 to 39 pct. 24 hr Trend...........Little change. * Wind (20 ft/10-min avg)..Southeast around 10 mph. * 10000 ft MSL Wind........Southwest 15 to 20 mph. * Mixing height............2040 ft AGL. * Transport winds..........Southeast 11 to 12 knots. * Ventilation Category.....Fair (24480 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .NEW YEARS DAY...Showers likely. Lows 43 to 53. Highs 59 to 69. Light winds. Minimum Humidity 58 to 68 pct. .FRIDAY...Partly cloudy. Chance of showers. Lows 41 to 51. Highs 58 to 68. Light winds. Minimum Humidity 50 to 60 pct. .SATURDAY...Partly cloudy. Lows 35 to 45. Highs 61 to 71. Light winds. Minimum Humidity 34 to 44 pct. .SUNDAY...Mostly cloudy. Lows 38 to 48. Highs 61 to 71. .MONDAY...Mostly cloudy. Lows 38 to 48. Highs 59 to 69. NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL) $$ AZZ153-311000- Arizona Fire Weather Zone 153 Northern Graham County-Northern Greenlee County- White and Gila Mountains-Apache Sitgreaves NF- Southern San Carlos Reservation above 5000 feet-SDC- 135 AM MST Wed Dec 31 2025 .TODAY... * Sky/Weather..............Mostly sunny (20-30 pct) then becoming partly cloudy (30-40 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Max Temperature..........50 to 60 degs. 24 hr Trend...........Up 3 to 6 degs. * Min Humidity.............21 to 31 pct. 24 hr Trend...........Down 11 to 15 pct. * Wind (20 ft/10-min avg)..East around 10 mph. * 10000 ft MSL Wind........Southeast around 10 mph shifting to the south in the afternoon. * Mixing height............2468 ft AGL. * Transport winds..........East 15 knots. * Ventilation Category.....Fair (37020 knot-ft). .TONIGHT... * Sky/Weather..............Partly cloudy (40-50 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Min Temperature..........33 to 43 degs. 24 hr Trend...........Up 3 to 7 degs. * Max Humidity.............40 to 50 pct. 24 hr Trend...........Down 22 to 26 pct. * Wind (20 ft/10-min avg)..East around 10 mph. * 10000 ft MSL Wind........Light winds becoming southwest around 10 mph after midnight. .WEDNESDAY... * Sky/Weather..............Mostly cloudy (55-65 pct). Slight chance of showers. * Chance of Precip.........20 pct. * Chance of Thunder........0 pct. * Max Temperature..........53 to 63 degs. 24 hr Trend...........Up 2 to 5 degs. * Min Humidity.............24 to 34 pct. 24 hr Trend...........Up 6 to 10 pct. * Wind (20 ft/10-min avg)..Light winds. * 10000 ft MSL Wind........West 15 to 20 mph. * Mixing height............2074 ft AGL. * Transport winds..........East 11 knots shifting to the south in the afternoon. * Ventilation Category.....Fair (22814 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .NEW YEARS DAY...Showers. Lows 38 to 48. Highs 47 to 57. Light winds. Minimum Humidity 71 to 81 pct. .FRIDAY...Partly cloudy. Chance of showers. Lows 37 to 47. Highs 50 to 60. Light winds. Minimum Humidity 52 to 62 pct. .SATURDAY...Partly cloudy. Lows 31 to 41. Highs 54 to 64. Light winds. Minimum Humidity 30 to 40 pct. .SUNDAY...Mostly cloudy. Lows 34 to 44. Highs 53 to 63. .MONDAY...Mostly cloudy. Slight chance of showers. Lows 34 to 44. Highs 50 to 60. NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL) $$ AZZ154-311000- Arizona Fire Weather Zone 154 Forest Woodlands FDRA including the Sky Islands of Southeast Arizona above 5500 feet-Coronado NF-TDC- 135 AM MST Wed Dec 31 2025 .TODAY... * Sky/Weather..............Mostly cloudy (50-60 pct) then becoming partly cloudy (45-55 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Max Temperature..........49 to 59 degs. 24 hr Trend...........Up 3 to 7 degs. * Min Humidity.............37 to 47 pct. 24 hr Trend...........Down 1 pct. * Wind (20 ft/10-min avg)..East 10 to 20 mph. * 10000 ft MSL Wind........South around 5 mph shifting to the southwest in the afternoon. * Mixing height............2228 ft AGL. * Transport winds..........East 18 to 20 knots. * Ventilation Category.....Good (42332 knot-ft). .TONIGHT... * Sky/Weather..............Mostly cloudy (55-65 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Min Temperature..........38 to 48 degs. 24 hr Trend...........Up 6 to 10 degs. * Max Humidity.............53 to 63 pct. 24 hr Trend...........Down 15 to 19 pct. * Wind (20 ft/10-min avg)..East 10 to 15 mph. * 10000 ft MSL Wind........West 5 to 10 mph. .WEDNESDAY... * Sky/Weather..............Mostly cloudy (65-75 pct). Chance of showers. * Chance of Precip.........30 pct. * Chance of Thunder........0 pct. * Max Temperature..........53 to 63 degs. 24 hr Trend...........Up 2 to 5 degs. * Min Humidity.............36 to 46 pct. 24 hr Trend...........Up 1 to 4 pct. * Wind (20 ft/10-min avg)..South 10 to 15 mph. * 10000 ft MSL Wind........Southwest 15 to 20 mph. * Mixing height............2521 ft AGL. * Transport winds..........South 11 to 12 knots. * Ventilation Category.....Fair (28991 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .NEW YEARS DAY...Mostly cloudy. Chance of showers. Lows 41 to 51. Highs 51 to 61. Light winds. Minimum Humidity 65 to 75 pct. .FRIDAY...Partly cloudy. Chance of showers. Lows 38 to 48. Highs 51 to 61. Light winds. Minimum Humidity 55 to 65 pct. .SATURDAY...Partly cloudy. Lows 35 to 45. Highs 55 to 65. Light winds. Minimum Humidity 37 to 47 pct. .SUNDAY...Mostly cloudy. Lows 38 to 48. Highs 54 to 64. .MONDAY...Mostly cloudy. Slight chance of showers. Lows 38 to 48. Highs 52 to 62. NOTE TO USERS - ZONE 154 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE AVERAGE ACROSS THE ZONE $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson