textproduct: Pocatello

KEY MESSAGES

- Prolonged Quiet Weather Period: High pressure and dry air will keep eastern Idaho completely dry with minimal cloud cover through the workweek, upcoming weekend, and into early October. Zonal flow aloft will hold daytime highs near late- September averages in the upper 60s to lower 70s across lower elevations through Wednesday.

- Unseasonable Late-Week Warmth: An amplifying Great Basin ridge will boost lower-elevation temperatures into the upper 70s and lower 80s starting Thursday and continuing through the weekend.

- No Fall-Like Weather in Sight: High confidence exists for above-normal temperatures and suppressed precipitation extending through the first full week of October.

DISCUSSION

Issued at 107 AM MDT Wed Sep 30 2026

Dry weather looks likely into early next week and perhaps further. Models are picking up on a weak low that moves through the region during that time that may produce some isolated to scattered showers. But not looking at much rainfall from that system if it materializes. Temperatures will move to well above average by the weekend as a ridge builds over the Great Basin.

AVIATION /12Z TAFS THROUGH 12Z THURSDAY/

Issued at 523 AM MDT Wed Sep 30 2026

VFR conditions forecast under high pressure and clear skies. Afternoon wind gusts at KBYI expected to reach around 18 kts with winds elsewhere generally not exceeding 10 kts.

FIRE WEATHER

Issued at 107 AM MDT Wed Sep 30 2026

Dry weather likely for the next several days. Some gusty conditions of 20 to 25 mph likely today across the southern highlands. A few gusts of 15 to 20 mph Thursday afternoon across the region with lighter winds for Friday.

PIH WATCHES/WARNINGS/ADVISORIES

None.