textproduct: Boise

UPDATE

Updated aviation discussion.

KEY MESSAGES

- Above normal temperatures through the weekend.

- A weak cold front brings a slight chance of showers to Baker County and the west central Idaho mountains on Sunday.

- Significantly above normal temperatures develop next week, peaking Wednesday around 15 degrees above normal with potential record highs.

SHORT TERM /Through Monday Night/

Issued 303 AM MST SAT NOV 7 2026 The upper-level ridge will be overhead through early afternoon, providing mostly clear skies and warm temperatures of 10-15 degrees above normal. The ridge will begin to slowly move east late this afternoon and evening, with a weak shortwave trough and associated cold front tracking across the Pacific Northwest through the weekend. Higher precipitation chances will stay NW of the area, with only a slight chance expected across Baker County and the west central Idaho mountains Sunday. The rest of the area will see breezier winds and increased mid- and high-level cloud cover. Late Monday, a stronger shortwave trough will move through the area. Precipitation chances of 10-30% are forecast for higher elevations Monday night. Snow levels during this period will hover around 7000 ft MSL. Despite the increased cloud cover and the weak frontal passage, temperatures will remain unseasonably above average into next week.

LONG TERM /Tuesday through Saturday/

Issued 303 AM MST SAT NOV 7 2026 Above average temperatures will remain through the week as an upper-level ridge persists over the Great Basin. Dry conditions, mostly clear skies, and temperatures 10 to 15 degrees above normal are expected through the mid-week. Upper- level troughing in the Gulf of Alaska will remain offshore until late Thursday when the ridge moves east and weakens. Come Friday, models agree on the eastward movement of the strong longwave trough offshore, but not on how far inland. This will be the leading difference in what the weather could be next weekend, with possibilities ranging from widespread precipitation to none at all. For now, Friday and Saturday will see slight chances of rain / mountain snow and the beginning of a slight cooldown.

AVIATION /12Z Saturday through Sunday/

Issued 422 AM MST SAT NOV 7 2026

VFR. A 10% chance of fog/low stratus developing near KBKE/KMYL this morning. Surface winds: variable 12 kt or less. Then, E to SE 5-15 kt Saturday afternoon, with gusts to 20-25 kt in W Snake Plain and Baker County. Winds aloft at 10kft MSL: W to SW 10-20 kt. Areas of low-level wind shear Saturday night, mainly KBNO- KONO-KSNT and northward.

KBOI...VFR. Surface winds: SE 5-12 kt overnight through Saturday. Gusts around 20 kt developing Saturday afternoon.

Sunday Outlook...Mainly VFR, with SCT-BKN mid and high cloud coverage. Isolated showers and mtn obscuration across the north on Sunday, with snow levels around 7kft MSL. Surface winds: SE-SW 5-15 kt, shifting to W-NW 5-15 kt Sunday afternoon.

BOI WATCHES/WARNINGS/ADVISORIES

ID...None.

OR...None.