606
FXUS65 KBOI 090238
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
838 PM MDT Fri Aug 8 2025

.DISCUSSION...Northwest flow aloft will continue to provide the
region with dry conditions through Saturday. Temperatures will
be warmer on Saturday but with highs still around 5 to 10
degrees below normal. No updates.

&&

.AVIATION...VFR. Surface winds: mainly NW 5-15 kt. Winds aloft
at 10kft MSL: NW 5-15 kt.

KBOI...VFR. Surface winds: light mainly NW less than 10 kt.

Sunday Outlook...VFR. Surface winds: generally NW 5-15 kt.

&&

.PREV DISCUSSION...
SHORT TERM...Tonight through Sunday night...No forecast
changes. Cool upper trough has moved east to MT and WY and
will continue to move away. An upper ridge in the Pacific
will expand eastward this weekend with a warming trend. Skies
will stay clear in the south, with scattered clouds in the
north. Northwesterly flow aloft will keep monsoon moisture
well to the south. Wind will be light west or northwest,
except gusts to 25 mph in the Snake Basin in the afternoons.

LONG TERM...Monday through Friday...The center of an upper
level ridge will migrate from the Great Basin on Monday to the
Four Corners by Wednesday. The ridge will bring hot temperatures
to our area, with highs around 5 degrees above normal. For now,
Tuesday looks to be the hottest day with highs in the upper 90s
to around 100 degrees in the Treasure Valley. As the ridge axis
shifts east, southerly flow may allow monsoon moisture to move
into our area, with a slight (10-20%) chance of showers and
thunderstorms in the forecast along the Idaho/Nevada border on
Wednesday. An upper level trough will move into the Pacific
Northwest on Thursday and Friday. This will cool temperatures
by several degrees, with highs expected to be near to slightly
below normal. Despite the trough, moisture will remain limited
resulting in minimal shower and thunderstorm chances. Expect
locally breezy winds through the period.

&&

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

&&

$$

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DISCUSSION...BW
AVIATION.....BW
SHORT TERM...LC
LONG TERM....ST