textproduct: Pocatello

KEY MESSAGES

- Chilly Still Today: A deep upper-level trough will keep dense cloud cover and unseasonably cool temperatures locked over eastern Idaho, with daytime highs limited to the 40s and 50s.

- Late Week Ridge & Pleasant Weekend: High pressure ridging brings clearing skies and temperatures warming to seasonal norms by Thursday and Friday, setting up a much more pleasant weekend.

DISCUSSION

Issued at 218 AM MDT Tue Oct 13 2026

Scattered showers continue across portions of Idaho early this morning as an area of low pressure pinwheels eastward across Nevada, pushing Pacific moisture northward still. This low will continue moving south and east over the next 24 hours and slowly take the moisture with it. So, expect coverage of these showers to also move south and eastward with the Central Mountains being mainly dry today. By this evening, most of our rain will come to an end in the Snake River Plain, too, with showers lingering in parts of the Eastern Highlands through Wednesday morning. For most of us, these spotty showers today and into tomorrow morning mean about another tenth of an inch of QPF at best with some locally higher amounts in the higher elevations in the South Hills and Eastern Highlands. Look for a few inches of high elevation snow, too, with some light snow mixing at at times early this morning in some of the lower elevations.

Temperatures early today will be cold to start, in the 20s and 30s for most. As such, we have Frost Advisory/Freeze Warning out again for the same areas as yesterday. Expect these Frost Advisory and Freeze Warning headlines again tonight into Wednesday morning and remember our Frost/Freeze products generally come to an end on October 15th, but stay tuned for any additional information. Afternoon highs today will be in the mid 40s for many, but warm into the low to mid 50s in parts of the Central Mountains where we finally dry out today. As we see this drying and clearing trend, we will have to watch areas (especially the Snake River Plain) Wednesday morning for some dense fog given all of the moisture we've had around here lately.

High pressure returns to Eastern Idaho in the second half of the week, meaning we look to stay dry and warm up after Wednesday. Highs return to the low 60s for many by Thursday afternoon and we should be in for a beautiful weekend in the mid to upper 60s across the area.

AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/

Issued at 508 AM MDT Tue Oct 13 2026

Isolated to scattered showers continue on and off around the area today. While rain will be more sparse than the last few days, low to mid level cloud cover will keep CIGs in MVFR to VFR levels. DIJ is the exception where CIGs are down to IFR levels and will most likely stay there through the rest of the day. Improvements are expected at BYI, IDA, and PIH as we get into the afternoon and start to dry out, but we will have to watch for the potential for some fog development around PIH and IDA Wednesday morning given all of the moisture that remains as cloud cover begins to clear. Winds will remain fairly light today with gusts only around 15 kts this afternoon.

FIRE WEATHER

Issued at 218 AM MDT Tue Oct 13 2026

The Central Mountains will see drying first today with isolated to scattered showers linger today and into early Wednesday for the rest of our coverage area. For most, look for another tenth of an inch of rainfall in parts of the South Hills and Eastern Highlands with an additional couple of inches of high elevation mountain snow in those areas, too. By Wednesday, we're looking a drier conditions for everyone and the start of a gradual warming trend that will last at least through the weekend.

PIH WATCHES/WARNINGS/ADVISORIES

Freeze Warning until 9 AM MDT this morning for IDZ051-052-054- 055. Frost Advisory until 9 AM MDT this morning for IDZ053.