Post Falls, Idaho 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

803
FXUS66 KOTX 241201
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
401 AM PST Sat Jan 24 2026

.KEY MESSAGES...

- Colder temperatures this weekend with overnight lows in the
  teens to low 20s

- Quiet weather pattern through next week

- Temperatures moderating for the middle to end of next week

&&

.SYNOPSIS...
Colder temperatures are expected this weekend with overnight
lows in the teens to lower 20s. A quiet weather pattern is
expected through next week.

&&

.DISCUSSION...
Today through Sunday: The push of dry air ushered in by the trough
passing to our east has cleared out stratus for much of the area,
lowering PWATs to 40-50% of normal for the forecast area. Dry air
continuing to move through the PNW will keep PWATs dry through
Sunday. The far southeastern portion of our forecast area, namely
the Pullman area, has some lingering stratus, but the persistent dry
air will scour that out through the weekend. These clear skies
will allow for efficient radiational cooling, lowering
temperatures today with highs in the 30s and lows in the teens,
roughly 8-10 degrees cooler for this time of year.

Monday through Saturday: On Monday, the ridge will flatten and a
weak shortwave embedded within the flow will pass through, but
will result in little to no precipitation across the area.
However, PWATs will rise to 90-100% of normal, increasing
boundary layer moisture. This favors stratus returning and
temperatures warming into the 40s by midweek. Our first real
chances of precipitation come Wednesday through Friday of next
week. A low pressure system near Alaska flattens the ridge and
brings in a shortwave, raising PWATs to 120-130% of normal.
However, precipitation totals will be low. Stevens and Lookout
Passes have only a 20-30% chance of one inch of snow or more
through Friday. Because of temperatures continuing to warm, snow
levels will be high, resulting in at least a rain/snow mix
throughout the lowlands, if not mostly rain. Much of the lowlands
have a 20-30% chance of 0.10 inches of precipitation or more.
Looking forward into next weekend, long term models and clusters
overwhelmingly show higher heights prevailing over the area. This
is reflected in the CPC`s 6-10 and 8-14 Day Outlooks, which favor
higher temperatures and near normal or just below normal
precipitation. Bottom line: expect a mostly dry and warming week,
with only minimal snow at the highest mountain elevations. /AS

&&

.AVIATION...
12Z TAFs: Drier air has taken residence over northern and
Central WA with moderate to high confidence for VFR skies
for Omak, Wenatchee, Moses Lake, and Colville. Areas of low
stratus have expanded across southeastern WA and portions of
the Idaho Panhandle this morning. With boundary layer winds
shifting from north to south, we are seeing subtle northward
expansion from Pullman toward Spokane-Coeur D Alene. HREF
introduces low probabilities (30%) at these locations after 16z
which fluctuates from 20-40% through 00z. Based on the latest
satellite data and presence of low clouds within 20 nm of GEG,
low clouds were included in the 12z TAF issuance through HREF
does keep highest probabilities >40% just south of the I-90
corridor or largely on the doorstep of KGEG-KSFF-KCOE. The
reverse flow in the boundary layer leads to a 70% chance for
clearing at PUW this afternoon. Once the low clouds become
established vcnty of KGEG-KCOE, light winds will lead to low
confidence for clearing and increased odds for the low-level
moisture to waver around before drifting to the west 03-06z as
easterly winds pick back up. Cloud heights over and surrounding
Lewiston are far less certain with variable heights from 2-4K ft
AGL.

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: It is close to a
50% chance that the low clouds remain just south of KGEG-KSFF
with scattered coverage vs broken. If they become established,
it may be slow to lift and break out completely with some degree
of MVFR stratus into the evening hours. As flow become easterly
overnight, this will favor lower probabilities for KCOE/KSFF but
a continued threat for KGEG. Setup at KPUW-KLWS would be toward
shallow ground fog with low confidence for long duration
restrictions. /sb
-----------------------

Confidence descriptors:
Low - Less than a 30 percent chance
Moderate - 30 to 70 percent chance
High - Greater than a 70 percent chance

For additional probabilistic information for NWS Spokane
airports,please refer to the Aviation Dashboard on our
webpage: https:/www.weather.gov/otx/avndashboard

&&

.Preliminary Point Temps/PoPs...
Spokane        29  17  30  20  33  23 /   0   0   0   0   0   0
Coeur d`Alene  29  16  32  19  35  24 /   0   0   0   0   0   0
Pullman        29  19  33  23  36  28 /   0   0   0   0   0  10
Lewiston       34  21  36  25  41  30 /   0   0   0   0   0   0
Colville       29  15  29  16  31  20 /   0   0   0   0   0   0
Sandpoint      27  18  30  19  33  23 /   0   0   0   0   0   0
Kellogg        27  16  31  21  36  28 /   0   0   0   0  10  10
Moses Lake     32  19  34  21  34  23 /   0   0   0   0   0   0
Wenatchee      34  21  32  25  34  24 /   0   0   0   0   0   0
Omak           34  19  32  21  33  22 /   0   0   0   0   0   0

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
WA...None.
ID...None.

&&

$$