FXUS65 KBOI 162339
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
539 PM MDT Fri Oct 16 2026

.UPDATE...Updated aviation discussion.

&&

.KEY MESSAGES...
- Warm and dry conditions through the weekend, with high
  temperatures 5 to 10 degrees above normal.

- Active pattern returning cooler conditions and precipitation
  chances Wednesday through Friday.

&&

.SHORT TERM /Through Sunday Night/...
Issued 213 PM MDT FRI OCT 16 2026
A high amplitude upper ridge currently covering the Pac NW will
give way to shortwave energy that will push into BC, Canada 
this weekend. Saturday is the warmest day with temperatures 
around 10 degrees above normal, or solidly in the 70s across
lower elevations. Sunday brings several degrees of cooling
in response to the passing upper trough. Breezy south to east 
winds will fade on Sunday in response a weakening surface high 
along the Continental Divide and decrease in the flow aloft.

&&

.LONG TERM /Monday through Friday/...
Issued 213 PM MDT FRI OCT 16 2026
Through the week, a high amplitude trough will become a cut off
low in southern California and linger in the Great Basin. As 
the trough builds along the West Coast Monday evening, 
increasing clouds and breezy conditions in SE Oregon are 
expected. Residual dry conditions with the wind will support 
elevated fire weather, though impacts will be minimal as the low 
continues to move in. Temperatures will cool off Tuesday as a 
front moves through, cooling temperatures down to near-normal; 
low-mid 60s for the afternoon high in lower elevations, low 50s 
for mountain valleys. Ensemble guidance largely favors another 
cold front on Thursday as the low moves weakens and rejoins the 
broader flow. This will lead to even cold temperatures, about 5 
degrees below normal, Thursday and Friday. Colder temps are 
accompanied by the best chances for precipitation across much of
the area, with valley rain and mountain snow possible.

&&

.AVIATION /00Z Saturday through Sunday/...
Issued 532 PM MDT FRI OCT 16 2026

VFR with passing high clouds. Smoke from prescribed burns will 
locally reduce visibility. Local LLWS will develop overnight 
near the top of the inversion in the lower Snake Plain. Surface 
winds: E-S 5-15 kt through Sat/AM, then SE-SW Sat/PM. Winds 
aloft at 10kft MSL: SW 10-25 kt.

KBOI...VFR with E-S 5-15 kt surface winds through Saturday.

Sunday Outlook...VFR conditions, with periods of high cloud 
cover. Surface winds become variable 5-12 kt Sunday. Winds 
aloft will remain out of the SW.

&&

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

OR...None.

&&

$$

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AVIATION.....SH
SHORT TERM...DG
LONG TERM....JM