070 FXUS65 KBOI 052100 AFDBOI Area Forecast Discussion National Weather Service Boise ID 300 PM MDT Fri Jun 5 2026 .KEY MESSAGES... - Cold frontal passage will bring gusty winds Saturday and Sunday. - High temperatures Sunday will be 10 degrees below normal with rain and snow showers possible in the west-central Idaho mountains. - Showers Tuesday and Wednesday will bring additional precipitation, mainly to the mountains. && .SHORT TERM /Through Sunday Night/... A shortwave trough entering the Pac NW will push a pair of cold fronts through the region this weekend. The first front will push across SE Oregon this evening, and SW Idaho overnight. This will bring gusty winds to 35 mph at the typically windy sites along the I-84 corridor between Baker City and Twin Falls. The frontal passage will be dry and result in temperatures 10-15 degrees cooler than today. Breezy conditions will continue during the day Saturday, as the main upper trough moves into the interior NW. A second cold front will accompany the trough passage Saturday night into Sunday, bringing another round of gusty winds, stronger than tonight. Gusts to 35 mph are expected in the Snake Plain east of Mountain Home on Sunday. The upper trough will support showers over the mountains of Baker County and the w-central Idaho mountains. Snow levels will briefly drop to between 4500-5500 feet Sunday morning. Light accumulation, less than an inch, is possible above 7000 feet through early morning. Showers will taper off Sunday afternoon as the trough exits east. Sunday is the coolest day with high temperatures around 70 in the lower elevations and mid-50s in the mountains (about 10 degrees below normal). && .LONG TERM /Monday through Friday/... Cool and unsettled through Thursday with temperatures around 10-15 degrees below normal. Another trough will move into the Pacific NW on Monday afternoon. This system will bring unsettled conditions to the area with showers and afternoon thunderstorms through Wednesday. Generally 0.10-0.25 inch of precipitation across the valleys, with 0.75 to 1.25 inch precipitation over the mountains. A ridge will build over the West Coast on Friday into the weekend with a gradual warming trend next weekend. && .AVIATION /18Z Friday through Saturday/... Issued 1126 AM MDT FRI JUN 5 2026 VFR. SCT to BKN mid and high clouds. Surface winds: W-SW 10-20kt this afternoon, except variable 5-10kt near KONO KBOI KMUO KTWF KJER, shifting to NW 10-20kt this evening, with gusts to 35kt near KONO behind a dry cold front. Winds aloft at 10kft MSL: W-SW 20-30kt. KBOI...VFR. Light surface winds, shifting to NW 5-10kt this afternoon. Weekend Outlook...VFR. Surface winds light overnight and NW 10-20kt Sat afternoon and W-NW 5-15kt Sun afternoon. && .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 SHORT TERM...DG LONG TERM....KA AVIATION.....KA