textproduct: Boise

UPDATE

Updated aviation discussion.

KEY MESSAGES

- Mild and dry Wednesday through early Friday. Near record high temperatures.

- Chance of precipitation returns Friday night, with additional rain and mountain snow, along with cooler temperatures, through the weekend into next week.

- Windy this week, increasing and becoming very gusty Friday through Sunday.

SHORT TERM /Through Thursday Night/

Issued 234 PM MST TUE NOV 10 2026 Clouds continue to stream across the area as temperatures warm in building heights aloft. The cold pool in the lower treasure valley is warming up on track with the forecast, though a little under numerical consensus. As warm temps continue through thursday the cold pool will continue to degrade. Temperatures will warm up to about 10-20 degrees above normal, with afternoon highs in the lower valleys approaching 70 degrees in many areas. Winds each day remain somewhat gusty out of the SE, enhancing valley warming. Gusts 15 to 20 mph are possible in open areas and SE-NW funnels/gaps. Temperatures for many areas will approach daily records, and skies remain partly cloudy with period of clearing through the short term.

LONG TERM /Friday through Tuesday/

Issued 234 PM MST TUE NOV 10 2026 A deep cut off low pressure system will be moving onshore and east of the area through the weekend. Strong south/southwesterly flow aloft will increase during the day Friday as the system moves into the Pacific NW, with wind gusts 35-50 mph across the open terrain of southeast Oregon and far southwest Idaho, and 20-40 mph elsewhere. High temperatures on Friday will remain near record highs, warmest across the lower valleys of southwest Idaho, as the system moves in. The trough will weaken and become more of an open wave Friday into Saturday as it moves over the area, with a cold front moving west-to- east as well. Precipitation chances will rise to 50-90% Friday night through Saturday morning, highest across the mountains. Precipitation chances will gradually taper off through the day Saturday. Snow levels will begin the event 7-8 kft MSL and lower to 6 kft MSL by the end of the event. Winds will remain gusty on Saturday, but not as strong as Friday. Highs Saturday will cool 5-10 degrees from Friday.

Following this systems exit early Sunday, upper-level ridging will bring a brief dry period before the next system begins to move in. Another deep cutoff low moving inland from the Gulf of Alaska will be the weather maker early next week, bringing a 40-60% chance of precipitation to the area. Previous forecast models had this system moving in Sunday but recent trends and agreement have it now on Monday and Tuesday. Winds will weaken but continue to be breezy as the trough moves in. Temperatures will remain similar on Sunday, then cool several more degrees on Monday as colder air arrives with the trough. Snow levels are also forecast to lower to 4-6 kft MSL by Tuesday. Precipitation chances trend lower on Tuesday, but troughing overhead will keep conditions unsettled with temperatures cooling a few more degrees.

AVIATION /00Z Wednesday through Thursday/

Issued 357 PM MST TUE NOV 10 2026

Mainly VFR. Mid to high clouds through the period. Surface winds: Generally SE-SW 5-10 kt with gusts to around 20 kt Wed/PM in portions of E-Oregon and the Snake Plain. Winds aloft at 10kft MSL:W-NW 15-25 kt.

KBOI...VFR. Surface winds: SE 4-8 kt, becoming SE 5-10 kt with gusts to around 18 kt Wed/PM.

BOI WATCHES/WARNINGS/ADVISORIES

ID...None.

OR...None.