textproduct: Pocatello
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
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 /18Z TAFS THROUGH 18Z THURSDAY/
Issued at 1111 AM MDT Wed Sep 23 2026
Expect VFR conditions through the period. High pressure will bring clear skies and overall light winds.
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.
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