Emmett Weather

736
FXUS65 KBOI 040543
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
1143 PM MDT Fri Apr 3 2026

.UPDATE...Updated aviation discussion.

&&

.KEY MESSAGES...
- High pressure will continue to build across the region
  through the weekend, leading to a significant warming and
  drying trend.

- Cooler more seasonal conditions expected next week.

&&

.SHORT TERM /Through Sunday Night/...
Issued 201 PM MDT FRI APR 3 2026
Dry northwesterly flow continues across southeast Oregon and
southwest Idaho this evening as the previous trough exits. An
upper level ridge centered off the coast will continue to shift
eastward, becoming the dominant weather feature through the end
of the weekend. This transition will result in a pronounced
warming trend, with afternoon high temperatures climbing to
around 5 to 10 degrees above normal by Sunday. For tonight,
clear skies and diminishing winds will support efficient
radiational cooling. Enough residual moisture exists in the
deeper mountain valleys of the West Central Idaho and Boise
Mountains to allow for patchy fog development late tonight and
early Saturday morning. Lows will once again be chilly, dipping
into the 30s for most valley locations and teens in the higher
elevations.

Saturday and Sunday will see plenty of sunshine as the ridge
axis moves overhead. The airmass will remain stable with light
surface winds, generally under 10 mph. Highs on Saturday will
reach the mid 60s in the lower valleys, warming further into the
low to mid 70s by Sunday afternoon. Lows Sunday night will be
less biting than previous nights as the airmass moderates,
generally staying in the upper 30s to low 40s in the valley. No
precipitation is expected through the period.

&&

.LONG TERM /Monday through Friday/...
Issued 201 PM MDT FRI APR 3 2026
Monday and Tuesday, high pressure remains in place with dry
conditions, warm temps, and clear weather. Tuesday evening,
precipitation chances increase as a strong low moves down the
Canadian West Coast into the region. While the center of the low
stays north of the US border, moist flow aloft from the
Canadian system as well as a closed low off the CA coast supply
just enough fuel for showers to develop. Coverage will be
limited Tuesday through early Wednesday, but snow levels during
this time fall from 7-8 kft MSL to 5-7 kft MSL. Wednesday
evening through Thursday, the CA low moves inland, increasing
precipitation chances further in the colder airmass. Snow
showers in mountains and rain showers in valleys have a 20-30%
chance of precipitation across the area during this period. The
increasingly unsettled conditions continue into Friday as a
semi-stalled trough remains over the region behind these
systems. More lows funnel down from the Gulf of Alaska, leading
to consistent days of active precipitation. Temperatures during
this time drop from the 10-15 degrees above normal
Monday/Tuesday to near normal by Wednesday.

&&

.AVIATION /06Z Saturday through Sunday/...
Issued 1132 PM MDT FRI APR 3 2026

Mainly VFR under clear skies. Patchy mountain valley fog in the
morning. Surface winds: variable less than 10 kt. Winds aloft
at 10kft MSL: NW 5-10 kt.

KBOI...VFR. Surface winds SE 4-8 kt overnight, then NW Saturday
afternoon.

Sunday Outlook...VFR, high clouds. Patchy mountain valley fog
Sunday morning. Surface winds less than 10 kt.

&&

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

OR...None.

&&

$$

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AVIATION.....ST
SHORT TERM...JDS
LONG TERM....JM