675
FXUS65 KBOI 032024
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
224 PM MDT Wed Jun 3 2026

.KEY MESSAGES...
- Scattered showers and isolated thunderstorms this afternoon
  and evening across east-central Oregon and high terrain in
  central Idaho.

- Hot, dry, and windy through the evening with critical fire
  weather conditions in the Owyhee Mountains and Magic Valley.

- Gusty winds along a cold front this evening. Breezy winds
  through the end of the week into the weekend, with the
  strongest winds on Saturday.

- Temperatures fluctuate late this week into the weekend between
  10 degrees above normal and slightly below normal.

&&

.SHORT TERM /Through Friday Night/...
Light showers and overcast skies are covering most of southeast
Oregon and high terrain in southern Idaho. Hot temperatures
near 90F have been observed in the Upper and Lower Treasure
Valleys, with some temperature moderation expected this
afternoon with increasing clouds and colder air behind the
front. Wind gusts will increase this evening and shift to the
west, especially in the Lower Snake Plain. Red Flag Warnings
are still on track for hot, dry, and windy conditions in the
Owyhee Mountains and the Magic Valley, with single digit
relative humidity values occurring near the Nevada border as of
1:30 pm MDT. Isolated thunderstorms (<20% chance) and showers
will continue over northeastern Oregon and the West Central
Mountains, with virga showers over southwest Idaho. Little to no
rain is anticipated in the showers. Any stronger showers or
storms that develop will bring outflow wind gusts up to 40 mph
with blowing dust, but current forecast confidence is low and
keeps that threat further to the northwest. Temperatures will
cool off tomorrow by about 5-10 degrees, with highs in the upper
70s to low 80s expected in the lower elevations. As a ridge of
high pressure quickly rebuilds over the region, temperatures
will rebound back to about 10-15 degrees above normal on Friday,
with very dry conditions. A strong upper level low over the
Pacific will move onshore late Friday, bringing breezy
conditions to southeast Oregon and the Snake River Valley on
Friday afternoon into the evening ahead of a slight pattern
shift for the weekend.

&&

.LONG TERM /Saturday through Wednesday/...
A trough will move over the Pacific NW on Saturday and Sunday
bringing breezy conditions to the area and cooler temperatures.
Southwest Idaho and southeast Oregon will remain in the dry slot
with this system. Temperatures cool around 15 degrees from
Friday to around 5 degrees below normal Saturday and Sunday.
Another system moves into the Pacific NW on Monday through
Wednesday. Current forecast does not reflect this system but
subsequent forecasts should show increasing chances of
precipitation and cooler temperatures Monday through Wednesday.

&&

.AVIATION /18Z Wednesday through Thursday/...
Issued 1203 PM MDT WED JUN 3 2026
VFR. Isolated showers and virga today. A slight chance of
thunderstorms north of KBKE-KMYL. SW-SE surface winds SW-SE
5-15 kt with gusts to 25 kt this afternoon, then NW 10-20 kt
with gusts to 30 kt this evening, strongest near KONO. Winds
aloft at 10kft: SW 15-25kt, becoming NW 10-20kt Thu morning.

KBOI...VFR. SE winds 10-20kt this afternoon, shifting to NW
10-20kt this evening with a cold front.

&&

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

OR...None.

&&

$$

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SHORT TERM...SA
LONG TERM....KA
AVIATION.....KA