textproduct: Boise

UPDATE

Updated aviation discussion.

KEY MESSAGES

- Light rain and high mountain snow showers tonight. Mostly cloudy but dry in southern areas.

- Warm and dry Wednesday and Thursday. Near record high temperatures.

- Chance of precipitation Friday night and Saturday. Colder with rain and snow next week.

SHORT TERM /Through Wednesday Night/

Issued 245 PM MST MON NOV 9 2026 Weak Pacific cold front will bring light rain to northern zones tonight, ending before sunrise. Total precipitation will be .10 inch at most. Southern zones will be cloudy but dry. Clouds will limit overnight cooling. Tuesday will become sunny in southern zones but remain mostly cloudy in the north as a weak following warm front passes through. Wednesday looks mostly sunny, breezy, and warm as an upper ridge amplifies over the interior western US while a trough deepens in the eastern Pacific. Southeasterly surface winds will increase to 15 to 25 mph, and with skies becoming mostly sunny, high temps both Wednesday and Thursday will be 65 to 72 degrees in southern valleys, near record highs for those days.

LONG TERM /Thursday through Monday/

Issued 245 PM MST MON NOV 9 2026 An upper level ridge will remain over the area on Thursday with strong southwest flow aloft with multiple low pressure systems offshore in the Gulf of Alaska. This will keep temperatures well above normal through Friday. Temperatures will be near record highs Thursday and Friday with breezy to windy conditions. A cold front will approach the area on Friday. Gusts 35-50 mph are possible on Friday across the open terrain of southeast Oregon with gusts 20-40 mph elsewhere. Still high uncertainty on the timing of the cold front, with differences up to 12 to 24 hours, but showers increase across the area late Friday night into Saturday. There is significant differences in the models Saturday and beyond, but conditions are favoring cooler and unsettled late in the weekend with mountain snows early next week.

AVIATION /00Z Tuesday through Wednesday/

Issued 511 PM MST MON NOV 9 2026

Mainly VFR. Showers moving into the region this evening, primarily north and west of a KMUO-KSNT line. Ceilings lowering to low VFR in showers, with localized MVFR/IFR and terrain obscuration in the mountains. Valley fog creating LIFR conditions near KBNO early tomorrow morning. Snow levels 7.5-8.5kft MSL. Surface winds: SE-SW 5-15 kt, briefly WNW 8-12 kt with evening showers. Winds aloft at 10kft MSL: SW 15-30kt.

KBOI...VFR. A 30% chance of showers late this evening. Surface winds: NW 5-10kt this evening, becoming SE 5-10 kt later tonight.

BOI WATCHES/WARNINGS/ADVISORIES

ID...None.

OR...None.