374
FXUS65 KPIH 302005
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
105 PM MST Tue Dec 30 2025

.KEY MESSAGES...

- Dry conditions and warmer conditions through New Year`s Eve

- Rain and snow rings in 2026

&&

.SHORT TERM /THROUGH WEDNESDAY NIGHT/...
Issued at 102 PM MST Tue Dec 30 2025

Much like yesterday, eastern Idaho is generally void of any
appreciable cloud cover. Visible satellite imagery shows a few
high cirrus clouds streaking across the region but these are
few and far between. High pressure continues to amplify over the
area and temperatures are on an upward climb as most lower
valley locations are forecast to rise above the freezing mark
today, albeit briefly, before we lose the sun this evening. The
upper flow overnight and into the day tomorrow will become more
zonal and eventually SW by the time we get to Thursday AM. This
should allow for continued warming, both during the day and
overnight, as well as the introduction of some cloud cover once
again. Will likely get some mid/high level clouds as early as
later tonight which should help insulate us a bit tonight
keeping overnight lows warmer than where they have been for the
past few mornings. The last day of 2025 looks dry although we`ll
see cloud cover increasing throughout the day as moisture looks
to move in from the south. Daytime highs on Wednesday will warm
into the 40s in many areas. Hi-res CAMs show showers moving
into the region right around the time we`d be ready to ring in
the New Year setting the stage for a wet Thursday.

&&

.LONG TERM /THURSDAY THROUGH MONDAY/...
Issued at 102 PM MST Tue Dec 30 2025

The new year will start out Thursday as the previous one ended
which is warm and wet. Southerly flow aloft will bring moisture
into southeast Idaho with snow levels starting out near valley
floors early in day but rising to over 6 thousand feet by
Thursday afternoon and evening. Highs Thursday and Friday in the
upper 30s to mid 40s valleys and 30s to lower 40s mountains.
Will be drier late in day Friday under ridging then
southwesterly flow aloft returns with precipitation moving back
in on Saturday with at least a chance in the girds Saturday
through next Tuesday. Snow levels over 6 thousand feet Saturday
then dropping closer to 5 thousand feet Sunday into early next
week. Highs Saturday mid to upper 40s valleys and mid 30s to
lower 40s mountains. Highs Sunday through Tuesday in the 30s
mountains and upper 30s to lower 40s valleys. Lows Friday and
Saturday very warm with 20s mountains and 30s valleys with many
locations above freezing. Lows Sunday through Tuesday teens to
lower 20s mountains and 20s to lower 30s valleys.

&&

.AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/...
Issued at 1038 AM MST Tue Dec 30 2025

Upper level ridge dominates conditions through Wednesday
morning. VFR conditions with light winds and nothing more than
scattered high level clouds expected for the next 24 hours.

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

SHORT TERM...McKaughan
LONG TERM...GK
AVIATION...GK