196
FXUS65 KPIH 280759
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
159 AM MDT Thu May 28 2026

.KEY MESSAGES...

- Mainly dry today.

- Wet weather arrives Saturday for parts of east Idaho.

- Chilly weather over the weekend into early next week.

&&

.DISCUSSION...
Issued at 156 AM MDT Thu May 28 2026

Closed low pressure system continues to sit roughly over the
Lake Tahoe area. Circulation around this low has brought drier
air into our region from the south. Today should be the warmest
and driest day. A stray thunderstorm remains possible with high
res models indicating the Island Park region as the most likely
area for that to occur. On Friday the low weakens and advances
across the Great Basin. Most of Friday is dry still but late in
the day we could see some thunderstorms across the mountains and
highlands. Over the weekend, the low will advance into
southwest Wyoming and then move northward through Wyoming into
central Montana. It looks like this may bring some much needed
rain to our northeast corner with 0.50 to 1.00 inches of rain
now likely. For the rest of the area, amounts are less, ranging
from a few hundredths across the Magic Valley to 0.25 inches for
the eastern Snake Plain. Although amounts increase quickly as
one heads north out of Idaho Falls with nearly 0.50 inches
likely around Rexburg. Southeast Idaho probably sees around 0.25
inches from this system. Cooler weather is likely over the
weekend with highs on Saturday expected to be in the 50s for the
eastern highlands and 60s elsewhere. This leads us to chilly
mornings for Sunday and Monday morning with lows potentially
falling into the upper 30s for the Snake River Plain. As we head
into middle and late next week this system pulls away and we
are left with early summer like weather with highs generally in
the 80s and dry weather.

&&

.AVIATION /12Z TAFS THROUGH 12Z FRIDAY/...
Issued at 156 AM MDT Thu May 28 2026

Expect dry weather and vfr conditions today. Winds will become
gusty this afternoon with gusts to 25 kts likely at many sites.
SUN will likely switch to upvalley around midday and could see
some gusts to 20kts in the afternoon.

&&

.FIRE WEATHER...
Issued at 156 AM MDT Thu May 28 2026

Warm and dry weather is likely today as humidities fall into
the teens this afternoon. Peak wind gusts will likely be 20 to
30 mph for most locations this afternoon. A low pressure system
approaches on Friday. This will bring clouds and isolated
thunderstorms for the afternoon. Temps will be cooler and min
humidities should hold in the 20s. &&

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

&&

$$

DISCUSSION...13
AVIATION...13
FIRE WEATHER...13