textproduct: Pocatello

KEY MESSAGES

- Widespread frost/freeze conditions persist through Wednesday

- Temperatures continue to warm toward ABOVE AVERAGE throughout the week

- Best chance of showers and thunderstorms will be later Wednesday and Thursday

DISCUSSION

Issued at 1145 PM MDT Mon May 18 2026

A few early morning showers or sprinkles remain across the Magic Valley and Albion Mountains. Those should be gone by sunrise. Another round of isolated showers/sprinkles develops this afternoon and evening across most of the central mountains and along the Montana border. It also appears a few showers are possible across higher elevations south of the Snake Plain. The chance of thunderstorms is almost non-existent, but we also cannot completely rule it out across the central mountains. This should shift east diminish before midnight. We will see another break until Wednesday afternoon, when the next low begins to drop closer to eastern Idaho and we see an initial round of showers and storms develop. This storm slowly swings through on Thursday. Precipitation amounts don't appear impressive, although there are some trends that we could see some pockets of heavier precipitation involving any thunderstorms or bands developing. Snow is possible across the higher peaks and ridgelines on Thursday. Temperatures remain a bit BELOW AVERAGE today before warming to NEAR AVERAGE tomorrow and Thursday. Overnight lows will remain cold especially with not much cloud cover and lighter winds. Our FREEZE WARNING and FROST ADVISORY remain in place for this morning, and we will need another set of headlines for Wednesday morning. Cloud cover and precipitation will keep overnight lows more mild Thursday morning. Another thing of note for Thursday, we may need a LAKE WIND ADVISORY as northerly winds kick in and may be enough for choppy conditions on American Falls Reservoir.

The rest of the week and weekend look fairly dry, although we do see a couple of very weak lows sweeping across the state which could kick off a few showers or storms here and there. Temperatures jump quite a bit, with 70s and 80s returning Saturday-Monday. It does look a bit more breezy during that stretch as well. We should see another low drop south across the state by Tuesday, with cooler temperatures and an uptick in showers and storms.

AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/

Issued at 1157 AM MDT Tue May 19 2026

VFR conditions expected through the period. Winds remain light currently but should shift to the SW/W to everywhere outside of KSUN to around 10 knots through early evening. Winds lessen overnight becoming more southerly with a return to the SW/W expected Wednesday afternoon. Not expecting any impactful precip for eastern Idaho terminals.

PIH WATCHES/WARNINGS/ADVISORIES

None.