215
FXUS65 KPIH 301137
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
537 AM MDT Wed Sep 30 2026

.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.

&&

$$

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