421 FXUS65 KBOI 102023 AFDBOI Area Forecast Discussion National Weather Service Boise ID 223 PM MDT Thu Jul 10 2025 .SHORT TERM...Tonight through Saturday night...Dry northwesterly flow will persist through the weekend, maintaining generally quiet weather across the region. Winds will remain light, with occasional afternoon gusts up to 25 mph in the lower valleys. Skies will stay mostly clear, though localized areas of smoke are possible due to new wildfire activity. A few additional fires have been detected on satellite today, and its likely that a few more will be seen this afternoon and evening. At this time, smoke impacts appear minimal. The northwesterly flow aloft should continue to steer smoke from larger fires in south-central Oregon away from the area. Temperatures will trend warmer through the weekendstarting near seasonal averages on Friday and rising to about 5 degrees above normal by Sunday. .LONG TERM...Sunday through Thursday...Hot, dry, and breezy conditions are expected Sunday and Monday as strong high pressure dominates the southwest U.S. and influences the Intermountain West. A weak shortwave trough will approach from Canada late Monday and move south-southeast along the Northern Rockies by Tuesday. While the main bulk of mid-level moisture will remain east of the forecast area, latest guidance supports a 10-15% chance of thunderstorms farther west into central Idaho Tuesday afternoon and evening than previously expected. Surface winds will also increase with the trough passage and associated cold front, with gusts peaking around late afternoon. Max temperatures will lower slightly from Monday but are expected to remain a few degrees above normal. Thereafter, hot and mostly dry conditions are expected to return behind the trough. Models become somewhat disorganized toward the end of the week, but hint at the potential for showers/thunderstorms returning as southwest flow develops aloft. && .AVIATION...VFR. Localized smoke near wildfires. Surface winds: W to N 5-15 kt with 15-20 kt gusts...except 10-20 kt with 25-30 kt gusts for south-central ID. Winds aloft at 10kft MSL: NW-W 10-25 kt. KBOI...VFR. Surface winds: NW 8-14 kt. Gusts around 20 kt through this evening. Weekend Outlook: VFR. Localized smoke near wildfires. High density altitude due to hot temperatures, especially Sunday/Monday. Surface winds: W-N 5-15 kt, with 15-25 kt gusts in the afternoons. && .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...JDS LONG TERM....SH AVIATION.....SH |