textproduct: Boise
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
- Breezy northwest winds in the Snake Plain each afternoon through Wednesday.
- Fair skies and warmer temperatures through this weekend.
SHORT TERM /Through Wednesday Night/
As a trough moves east, high pressure builds to the south of our forecast area. Zonal flow will cap off the high pressure, leading to a moderated warming trend up to about 5 degrees above normal in the short term. Dry/fair weather is expected through the period, as moisture in the flow is positioned along the Canada-US border. West to northwest surface winds will become breezy each afternoon in the Snake Plain, especially between Boise and Twin Falls. The breezy 20-30 mph peak wind gusts occur in an area where forecast minimum relative humidities are around 15-20%, creating elevated fire weather though in a very localized portion of the high desert. Surface winds begin to taper off heading into the long term forecast.
LONG TERM /Thursday through Monday/
The area will remain under a flattened ridge north of a massive Pacific high slowly building into the Great Basin region. This continuous ridging pattern will favor clear skies, dry conditions, and the return of warmer than normal temperatures Thursday through Friday. A weak shortwave trough passing north of our area late Friday may bring in some high cloud coverage, possibly moderating the daytime temperatures on Saturday. Otherwise, broad Pacific ridging will dominate the region Sunday through early next week, continuing a much warmer and drier than normal pattern in the extended outlook.
AVIATION /18Z Monday through Tuesday/
Issued 1153 AM MDT MON SEP 28 2026 VFR with clearing skies this afternoon through tonight. Patchy morning fog/low stratus in sheltered mountain valleys Tuesday morning. Surface winds: W-NW 5-15 kt, afternoon gusts to 25 kt from KBOI to the south/east. Winds aloft at 10kft MSL: W-NW 5-15 kt.
KBOI...VFR with clear skies. Surface winds: W-NW 4-10 kt, increasing to 10-15 kt with gusts to 20-25 kt this afternoon after 20Z, lowering to 6-11 kt in the evening after Tue/02Z.
BOI WATCHES/WARNINGS/ADVISORIES
ID...None.
OR...None.
IMPORTANT This is an independent project and has no affiliation with the National Weather Service or any other agency. Do not rely on this website for emergency or critical information: please visit weather.gov for the most accurate and up-to-date information available.
textproduct.us is built and maintained by Joshua Thayer.