590
FXUS65 KPIH 240308
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
908 PM MDT Wed Sep 23 2026

.KEY MESSAGES...

- Warmer, above normal temperatures through Friday.

- Breezy to windy Friday afternoon followed by cooler weather
  this weekend.

- Slight chances for showers and storms Sunday and Monday.

&&

.DISCUSSION...
Issued at 1258 PM MDT Wed Sep 23 2026

A dry and warming pattern will persist through Friday as high
pressure builds over the region. Expect daytime temperatures to
warm into the upper 70s to low 80s across low elevations Friday.

An upper-level trough will work eastward with the accompanying cold
front bringing breezy to windy conditions on Friday. The strongest
winds will be across the central mountains, where gusts will range
30 to 40 mph, while gusts will largely remain below 30 mph
elsewhere. Precipitation will also remain further north outside of
our CWA. Temperatures will run much cooler behind the front, with
highs returning to the 60s and low 70s during the weekend.

The next Pacific trough will move onshore late Sunday, bringing
slight chances for showers and thunderstorms to Southeast Idaho
through at least Monday. Expect a 5 to 10 degree cooldown between
Sunday and Monday, sending daytime highs down into the 50s and 60s.
Ensembles suggest weak high pressure building in from the west
beginning Tuesday with another wave to our north suppressing the
ridge later Tuesday into Wednesday. That said, the National Blend of
Models maintains very slight chances of precipitation across
Southeast Idaho for the first half of next week.

&&

.AVIATION /06Z TAFS THROUGH 06Z FRIDAY/...
Issued at 908 PM MDT Wed Sep 23 2026

Light winds with mostly clear skies likely through Thursday.
Any fog that were to develop looks very isolated and highly
unlikely to affect any TAF locations.

&&

.FIRE WEATHER...
Issued at 1258 PM MDT Wed Sep 23 2026

A dry and warming pattern will persist through Friday as high
pressure builds over the region. Cold front on Friday will bring
breezy to windy conditions areawide and cooler weekend temperatures.
Minimum humidity will be at its lowest on Friday but still largely
remain above 20 percent. Conditions will remain dry until at least
Sunday/Monday when the next Pacific trough moves onshore and brings
a slight chance of showers and thunderstorms to Southeast Idaho.
Also expect a 5 to 10 degree cooldown between Sunday and Monday,
sending daytime highs down into the 50s and 60s during the first
part of next week.

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

DISCUSSION...Cropp
AVIATION...13
FIRE WEATHER...Cropp