389 FXUS65 KBOI 291758 AFDBOI Area Forecast Discussion National Weather Service Boise ID 1158 AM MDT Mon Jun 29 2026 .UPDATE...Updated aviation discussion. && .KEY MESSAGES... - Showers and isolated thunderstorms are expected this afternoon and evening across central Idaho. - Precipitation will persist across the West Central mountains through today, with another round of showers returning Tuesday afternoon. - Warmer and drier conditions Tuesday through Thursday. && .SHORT TERM /Through Wednesday Night/... Issued 259 AM MDT MON JUN 29 2026 The area of low pressure that has been the main driver of our weather over the past several days has shifted to the northeast over western Montana. Wrap-around moisture is streaming into the area from the north with radar imagery indicating light precipitation across northeast Oregon and central/northern Idaho. These showers are expected to work through the area today, especially across the central Idaho mountains. Enough instability will be present this afternoon/evening for an isolated thunderstorm as well. The low is expected to continue to track east of the region with diminishing shower chances Tuesday into Wednesday. Temperatures will warm 5-10 degrees each day. && .LONG TERM /Thursday through Monday/... Issued 259 AM MDT MON JUN 29 2026 A broad scale trough of low pressure is expected to linger over the region through the week, with gradual warming expected as atmospheric heights begin to rise. Temperatures will approach and exceed average values by late week and there is an outside chance of temperatures exceeding 95 degrees (10% chance) for lower elevations by Friday. Model trends indicate a drying trend as well throughout the week. && .AVIATION /18Z Monday through Tuesday/... Issued 1157 AM MDT MON JUN 29 2026 Generally VFR. Isolated/scattered showers across the west- central ID mountains through this afternoon. MVFR/IFR in mountain showers, with light snow above 8 kft MSL as snow levels rise from 8 kft MSL to 10 kft MSL this afternoon. Mountains obscured from precipitation and low ceilings. Surface winds: W-NW 5-15 kt. Gusts 20 to 30 kt near KTWF/KJER/KGNG until sunset. Winds aloft at 10kft MSL: NW 10-20 kt. KBOI...VFR. Foothills obscured with SCT-BKN clouds between 5000-7000 ft AGL. Surface winds: NW 7-12 kt. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...None. OR...None. && $$ www.weather.gov/Boise Interact with us via social media: www.facebook.com/NWSBoise www.x.com/NWSBoise AVIATION.....CH SHORT TERM...MC LONG TERM....MC