870 FXUS65 KBOI 122024 AFDBOI Area Forecast Discussion National Weather Service Boise ID 224 PM MDT Thu Jun 12 2025 .SHORT TERM...Tonight through Saturday night... A weak shortwave trough will remain across the Pacific Northwest region tonight, with showers and thunderstorms decreasing in the mountains later this evening. Late tonight and early Friday morning, a second weak trough is expected to move across the area and bring a 20-30% chance of rain across the mountains of East-central OR and West-central ID. As this weak shortwave steers northeastward, isolated thunderstorms will develop near Baker City and McCall Friday afternoon. The influence of a large upper ridge over the Four Corners region will bring dry conditions and slight warming to the upper 80s for the valleys through Saturday. Saturday night valley low temperatures are expected to drop into the 50s and mid 60s and higher elevation temperatures into the 40s. .LONG TERM...Sunday through Thursday...Dry through the period with only slight day to day temperature changes. Sunny Sunday and Monday. A broad upper trough off the northwest coast Sunday will move inland Tuesday and Wednesday with slight cooling and occasional cloudiness. Sunny again Thursday as the trough exits east. Temperatures will average 3 to 6 degrees above normal through the period. No significant winds. && .AVIATION...VFR. Local MVFR and mountain obscuration in scattered showers and isolated thunderstorms over ID mountains until 03Z. Surface winds: SW-NW 5-15kt. Gusty erratic winds up to 35 kt near thunderstorms. KBOI...VFR. Scattered clouds near 120 MSL. NW wind around 10kt until 01Z, then light and variable. Weekend Outlook...VFR. No showers or thunderstorms expected. Surface winds W-NW 5-15kt in the afternoons. Light winds at night. && .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...JY LONG TERM....LC AVIATION.....LC