St. Anthony, Idaho 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

869
FXUS65 KPIH 131940
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
1240 PM MST Tue Jan 13 2026

.KEY MESSAGES...

- Dry weather continues into next week

- Inversion conditions persist with limited fog/stratus

- Overall slow warming trend throughout this week?

&&

.SHORT TERM /THROUGH THURSDAY NIGHT/...
Issued at 1239 PM MST Tue Jan 13 2026

We are still under the control of high pressure for the next several
days. The Blend of Models continues to be way too warm in some of
our colder valley spots with inversions in place.
Expect highs to remain in the 20s and 30s where those hang tough,
and above 40 where we can get some mixing and also where snow cover
is decreasing or gone completely. Winds will be light or driven by
terrain during this period. Any fog or stratus impacts remain
limited. We kept it going in the Stanley Basin as it appears there
some there this morning. We also left it in down along the Utah
border for side of the Cache Valley, south of Malad and around Bear
Lake. We didn`t see any of that this morning, but we also had higher
clouds around. We are expecting less clouds tonight and tomorrow
night, so we put it back in the forecast. The Blend also wants to
add back into more valley locations, but it has been doing that for
days and we haven`t much if anything outside of those areas.
Therefore, we didn`t expand coverage.

&&

.LONG TERM /FRIDAY THROUGH MONDAY/...
Issued at 1239 PM MST Tue Jan 13 2026

Things still look dry well into next week. The Blend of Models is
still trying to gradually warm things up throughout the period.
However, it isn`t handling temperatures well especially where the
inversion is stronger. The ridge is also slipping back west a bit
and bringing a more northerly flow into our area. That usually
produces slightly colder temperatures this time of year. We will
have to monitor inversion conditions and also temperatures upstream
and see if any surge of colder air makes across the Divide into
central and eastern Idaho. We will likely be making changes to
temperature forecasts down the road based on how the pattern and
conditions trend. If you are wondering when it might rain or snow
again? PERHAPS, and we stress PERHAPS, toward the second half of
next week. Time will tell.

&&

.AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/...
Issued at 1053 AM MST Tue Jan 13 2026

VFR conditions expected to prevail through the period with light
winds and no precipitation expected. Will continue to see some
mid/high level clouds in place over the area for much of the day
but we should see a bit more clearing as we get into the day on
Wednesday allowing VFR to continue.

&&

.AIR QUALITY...
Issued at 1239 PM MST Tue Jan 13 2026

An AIR STAGNATION ADVISORY remains in place for the Pocatello area,
our side of the Cache Valley, and south of Malad toward Samaria. We
will continue to see limited mixing and lighter winds for the next
several days. Something to watch will be as we head into the
weekend, the ridge actually weakens and/or shifts back to the west
and northerly flow picks up a bit across our side of the state.
Whether that is strong enough to kick up any wind or mix out
inversions and "clear" the air remains to be seen. We will not look
at extending/cancelling the headline until we get down the road a
bit to see how things trend

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
Air Stagnation Advisory until noon MST Sunday for IDZ054-059.

&&

$$

SHORT TERM...Keyes
LONG TERM...Keyes
AVIATION...McKaughan
AIR QUALITY...Keyes