066
FXUS65 KBOI 030930
AFDBOI

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

.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/...
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/...
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 /06Z Tuesday through Wednesday/...
Issued 1037 PM MST MON NOV 2 2026
VFR with BKN-OVC high clouds. LLWS from the SE developing early
morning through afternoon from KONO to KMUO. Surface winds:
E-SE 5-15 kt overnight through Tuesday morning, with gusts 20-30
kt returning east of KBOI in the late morning through
afternoon. Winds aloft at 10kft MSL:
SE-SW 10-20 kt.

KBOI...VFR with BKN high cloud coverage. LLWS from the SE
developing early morning through afternoon. Surface winds: SE
5-10 kt overnight through morning, becoming more S-SE 6-12 kt in
the afternoon.

&&

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

OR...None.

&&

$$

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