


Area Forecast Discussion
Issued by NWS Boise, ID
Issued by NWS Boise, ID
619 FXUS65 KBOI 132049 AFDBOI Area Forecast Discussion National Weather Service Boise ID 249 PM MDT Sun Jul 13 2025 .SHORT TERM...Tonight through Tuesday night...Hot temperature are still on tap today and Monday with lower elevation high temperatures reaching around 100 degrees both days. In addition to the hot daytime highs, the overnight lows tonight will remain on the warm side, cooling to around 70 degrees across lower elevations. The Lower Treasure Valley still is looking to be the hottest with temperatures up reaching up to 104. All of that being said... The heat advisory continues for the Lower Treasure Valley until 9pm MDT (8pm PDT). Monday afternoon, some mid-level pacific moisture will set up near the NV border. This leads to a slight chance of showers (15-20%) and thunderstorms (10-15%) across the higher terrain near the NV border. Thunderstorms that develop will be high based and limited to the higher terrain. A dry cold front will cross our area overnight Monday, ahead of a trough digging down from British Columbia. Gradient winds increase ahead of this front, with gusts to 25-30MPH expected for the western Magic Valley. Winds remain gusty on Tuesday with temperatures dropping to near normal following the frontal passage. Tuesday afternoon, the trough digging down from British Columbia will graze over our area. This leads to a slight chance of showers (15-25%) and thunderstorms (10-20%) over northeastern Valley county and southern Twin Falls county. Hazards associated with storms that develop are lightning and localized wind gusts. .LONG TERM...Wednesday through Sunday...Dry northwest flow aloft sets in across our area on Wednesday. This helps maintain near normal temperatures for the mid-week. While deterministic models diverge on solutions beyond Wednesday, model ensemble are in general agreement of a ridge building in over the Great Basin/Four Corners. Climatologically, the ensemble solutions make sense for mid-July. While we stay on the northern periphery of this ridge, temperatures warm to 5-10 degrees normal by Friday as it builds. Chances of precipitation remain under 15% area-wide through Friday. Uncertainty remains regarding whether or not our area will get pushes of monsoonal moisture out of this pattern. && .AVIATION...VFR. Localized smoke near wildfires. High density altitude during afternoon hours due to hot temperatures. Surface winds: light and variable tonight, becoming NW 5-15 kt Monday morning, increasing to 10-20 kt with gusts to 25 kt Monday afternoon. Winds aloft at 10kft MSL: NW around 15 kt. KBOI...VFR. Surface winds: light and variable tonight, then NW 7-12 kt with gusts to 20 kt Monday afternoon. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...Heat Advisory until 9 PM MDT Monday IDZ012. Fire Weather Watch from Monday afternoon through Monday evening IDZ424-426. OR...Heat Advisory until 9 PM MDT /8 PM PDT/ Monday ORZ064. && $$ www.weather.gov/Boise Interact with us via social media: www.facebook.com/NWSBoise www.x.com/NWSBoise SHORT TERM...NF LONG TERM....NF AVIATION.....LC