textproduct: Pocatello

KEY MESSAGES

- Mainly dry today.

- Wet weather arrives Saturday for parts of east Idaho.

- Chilly weather over the weekend into early next week.

DISCUSSION

Issued at 156 AM MDT Thu May 28 2026

Closed low pressure system continues to sit roughly over the Lake Tahoe area. Circulation around this low has brought drier air into our region from the south. Today should be the warmest and driest day. A stray thunderstorm remains possible with high res models indicating the Island Park region as the most likely area for that to occur. On Friday the low weakens and advances across the Great Basin. Most of Friday is dry still but late in the day we could see some thunderstorms across the mountains and highlands. Over the weekend, the low will advance into southwest Wyoming and then move northward through Wyoming into central Montana. It looks like this may bring some much needed rain to our northeast corner with 0.50 to 1.00 inches of rain now likely. For the rest of the area, amounts are less, ranging from a few hundredths across the Magic Valley to 0.25 inches for the eastern Snake Plain. Although amounts increase quickly as one heads north out of Idaho Falls with nearly 0.50 inches likely around Rexburg. Southeast Idaho probably sees around 0.25 inches from this system. Cooler weather is likely over the weekend with highs on Saturday expected to be in the 50s for the eastern highlands and 60s elsewhere. This leads us to chilly mornings for Sunday and Monday morning with lows potentially falling into the upper 30s for the Snake River Plain. As we head into middle and late next week this system pulls away and we are left with early summer like weather with highs generally in the 80s and dry weather.

AVIATION /12Z TAFS THROUGH 12Z FRIDAY/

Issued at 156 AM MDT Thu May 28 2026

Expect dry weather and vfr conditions today. Winds will become gusty this afternoon with gusts to 25 kts likely at many sites. SUN will likely switch to upvalley around midday and could see some gusts to 20kts in the afternoon.

PIH WATCHES/WARNINGS/ADVISORIES

None.