111
FXUS65 KBOI 032005
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
205 PM MDT Wed Sep 3 2025

.SHORT TERM...Tonight through Friday night...Gradual day-to-day
cooling as the upper ridge weakens over the interior western US
while holding its position. Little change in weather features,
though, with a 10-20 percent chance of late-day showers and
thunderstorms continuing in eastern OR. Late Friday night a
Pacific short wave trough will swing inland, and with mid-level
monsoon moisture still present the chance of showers will
increase to 25 to 40 percent in eastern OR, and clouds will
increase in western ID.

.LONG TERM...Saturday through Wednesday...Saturday will bring
the best chance of showers and thunderstorms (30-50 percent),
as the Pacific short wave trough moves through.  PoPs will
decrease from west to east Saturday night through Sunday as
the trough and monsoon moisture shift east. On Tuesday the
main Pacific upper low will come inland, and by Wednesday it
will be over our CWA with showers and much cooler temps.
Current forecast trends are conservative, but if today`s
models prove correct we will adjust them cooler and wetter,
i.e., highs temps in the 50s and 60s in the mountains and
60s to lower 70s in the valleys, and PoPs 50-80 percent.

&&

.AVIATION...VFR. Isolated showers/thunderstorms in SE Oregon,
gusts 30-40 kt from downdrafts. Smoke layers. Surface winds:
W-NW 5-15kt until sunset, with gusts to 25 kt in eastern OR,
then light and variable. Winds aloft at 10kft MSL: variable
5-15kt.

KBOI...VFR. Smoke layers aloft. Surface winds: NW 5-10kt
until sunset, then light and variable.

&&

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

&&

$$

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SHORT TERM...LC
LONG TERM....LC
AVIATION.....LC