001
FXUS65 KBOI 031202
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
502 AM MST Tue Nov 3 2026

.UPDATE...Updated aviation discussion.

&&

.KEY MESSAGES...
- Breezy today. Near to slightly above normal temperatures
  through the week, rising to above normal by the weekend.

- Scattered showers near the Idaho/Nevada border today, and
  across the north on Thursday.

&&

.SHORT TERM /Through Thursday Night/...
Issued 230 AM MST TUE NOV 3 2026
A closed low pressure system will move into northern California
today, then across northern Nevada tonight. High clouds will
move across the area today ahead of the low, and southeast winds
will become breezy across the Snake Plain with gusts 20-35 mph.
Highs will be up to 5 degrees warmer than yesterday under
increased southerly flow aloft, with the most warming across
southern Idaho. Overall, highs will be near to slightly above
normal. Scattered showers will develop near the Idaho/Nevada
border late this afternoon into tonight, but elsewhere it will
remain dry.

Clouds will decrease on Wednesday with lighter winds as the low
pulls away and a shortwave ridge moves overhead. This ridge
will be short-lived as a weak trough moves into the area on
Thursday, bringing clouds and a 10-30% chance of showers, with
the highest chance across the north. Snow levels will be around
4500-5500 feet with a light dusting of snow possible in the
mountains. Temperatures will be 5-10 degrees cooler on Thursday
in the mountains with only a couple degrees of cooling in the
valleys. Winds will remain light. Patchy fog will develop each
night this week in sheltered basins.

&&

.LONG TERM /Friday through Tuesday/...
Issued 230 AM MST TUE NOV 3 2026
A trough will move onto the British Columbia coast on Friday
while a ridge off the coast of California builds inland and
north. The ridge should keep atmospheric river moisture
associated with the trough to the north with only a 10-20%
chance of showers across our northern areas on Friday. This
general pattern will hold through the weekend and into early
next week, keeping our area mostly dry while southwest flow
increases temperatures to 5-10 degrees above normal. Lower
valleys will see highs in the 60s with 40s and 50s in the
mountains. The trough will edge further down the coast on
Sunday, bringing breezy conditions and increased clouds but a
less than 10% chance of precipitation. Precipitation chances
will climb to 10-30% by Tuesday as this pattern progresses.

&&

.AVIATION /12Z Tuesday through Wednesday/...
Issued 446 AM MST TUE NOV 3 2026
VFR under mid to high clouds. LLWS from the SE this morning
from KONO to KMUO. Scattered showers developing tonight near
the Idaho/Nevada border. Localized MVFR possible in precip.
Snow levels 6-7kft MSL. Surface winds: E-SE 5-15 kt, with gusts
20-30 kt south/east of KEUL late this morning through the
afternoon, becoming variable less than 10 kt this evening. Winds
aloft at 10kft MSL: SE-SW 10-20 kt.

KBOI...VFR under high clouds. LLWS from the SE this morning.
Surface winds: SE 7-13 kt, gusts 20-25 kt possible in the
afternoon, becoming variable less than 6 kt by early evening.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...None.

OR...None.

&&

$$

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AVIATION.....ST
SHORT TERM...ST
LONG TERM....ST