Ammon, Idaho 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

462
FXUS65 KPIH 062256
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
356 PM MST Fri Mar 6 2026

.KEY MESSAGES...

- Patchy dense fog across parts of Eastern Idaho overnight into
  Saturday morning.

- Conditions turn mostly dry this weekend, but northerly flow
  aloft will support very light snow showers across high
  elevations.

- Mild unsettled conditions are forecast for most of next week,
  along with periods of windy to very windy conditions.

&&

.DISCUSSION...
Issued at 110 PM MST Fri Mar 6 2026

As our upper level trough continues to move eastward today, light
snow showers in the Eastern Highlands are tapering off and mostly
dry conditions will take over for the weekend. Sunshine today will
help warm many of us up into the low to mid 40s for afternoon highs
and help begin melting snow. Winds remain breezy at times with gusts
around 20 to 30 mph. As we melt snow and release some of that
moisture back into the atmosphere we will see the potential for
patchy dense fog increasing tonight into Saturday morning. Models
want to bring some patchy fog throughout the Snake River Plain, but
confidence in overall coverage is low. Precipitation and snow totals
were higher around Pocatello than Idaho Falls and Burley, but the
CAMs want to bring fog into those areas, too. So, have gone with a
blanket 20 percent chance of patchy dense fog through most of the
Snake River Plain and eastern Magic Valley. More of the same seems
likely Saturday night into Sunday as we`ll do even more melting on
Saturday given that highs will be a couple of degrees warmer than
today.

Northwest flow aloft on Saturday will support light snow showers up
in the Central Mountains and Island Park area, but any accumulation
looks to remain below 2 inches with some isolated higher amounts up
on mountain tops. This northwest flow transitions to zonal flow
aloft during the day on Sunday and temperatures will start to climb.
In fact, Pocatello will have a 30-40 percent chance of reaching 60
degrees on Sunday while the eastern Magic Valley warms into the low
60s and the Idaho Falls areas warms into the upper 50s with about a
10 percent chance of reaching 60 degrees. With this warmer weather
also comes more wind. Gusts on Sunday afternoon will be in the 25 to
35 mph range for many and Monday will be even windier with these
windy conditions last all week long. Highs will remain in the 50s
for most on Monday, but a cold front passing through Monday night
will drop us in the 30s and 40s for Tuesday. This front will bring
some precipitation chances with it, but looks confined to the higher
elevations for the most part at this time. Warming will get back
underway on Wednesday afternoon as the gusty winds continue.

&&

.AVIATION /00Z TAFS THROUGH 00Z SUNDAY/...
Issued at 347 PM MST Fri Mar 6 2026

Skies have finally improved to solid VFR for the afternoon and
overnight. An upper level feature arrives around 07/13Z plus or
minus an hour that spreads mid-level moisture at first along
with a return to south to southwest wind, then lower level
moisture for Sat afternoon. There is a threat of some marginal
VFR after 07/18Z for KIDA, KBYI, and KDIJ. KSUN too far north
and KPIH receives some downslope component to prevent the CIG
development. This mid-level cloudiness appears to arrive early
enough to prevent any low level stratus or BR/FG during Sat
morning to affect VSBY.

Except for KDIJ, wind actually stays up to help in the
prevention for stratus and BR/FG as well. Elevated wind to
around 15KT develops everywhere by late morning except the
sheltered KSUN.

&&

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

&&

$$

DISCUSSION...AMM
AVIATION...Messick