Lewiston, Idaho 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

548
FXUS66 KOTX 250451 CCA
AFDOTX

Area Forecast Discussion...CORRECTED
National Weather Service Spokane WA
951 PM PDT Tue Jun 24 2025

..KEY MESSAGES...

- Occasional rounds of scattered showers over the northern
  mountains this week.

- Warmer Wednesday then temperatures cooling back to seasonal
  normals Thursday and Friday.

- A more significant warmup heading into the weekend and early
  next week.

&&

.SYNOPSIS...
This week will feature occasional weak weather systems passing
through the region. A chance of showers will occur most days
over the northern mountains and Idaho Panhandle, with a few
thunderstorms possible along the Canadian border. Warmer
temperatures on Wednesday then cooling back to seasonal normal
Thursday and Friday. A more significant warmup is expected heading
into next weekend.

&&

.DISCUSSION...

Tonight through Saturday: A generally progressive westerly flow will
dominate the weather pattern through the end of the workweek, with a
series of weak shortwaves sweeping across the region. These systems
lack moisture, but we will see an increase in cloud cover with some
light sprinkles over the higher terrain. The best chance of
precipitation accumulations will be along the Canadian Border.
Temperatures will remain above normal through Wednesday, with highs
in the low to mid 80s. By Thursday and Friday, cooler air behind
these weak disturbances will bring temperatures back down to normal,
with highs generally in the mid to upper 70s.

Sunday through Monday: The pattern begins to change again as we move
into next week with a ridge building slightly to the east, keeping
us in southerly flow. Temperatures will warm back up into the 80s
and 90s, with ensembles hinting at a few 100 near the LC Valley and
Columbia Basin. This upcoming warm spell may be the first
significant heat event of the season, so those with outdoor plans or
heat sensitivities should plan on warmer temps. /KK

&&

.AVIATION...
06Z TAFS: VFR conditions will continue for all TAF sites with
mid to high level clouds passing through. A weak disturbance
will bring breezy west to southwest winds during the mid-
morning to early evening with gusts between 20 to 27 knots.
There is a 20 to 30 percent chance for showers with isolated
thunderstorms across the northern portions of eastern Washington
and north Idaho Wednesday afternoon and evening and across the
southern Idaho Panhandle late in the afternoon through the
evening. Most Convective-Allowing Models (CAMs) show weak
showers as far north as LWS and stronger showers just to the
southeast with the HREF giving a 10-20 percent chance of thunder
at LWS.

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence
of VFR conditions for all TAF sites. Low confidence for
thunderstorms to impact LWS.

-----------------------

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        59  82  55  77  53  76 /  10  10  10  10  10  10
Coeur d`Alene  58  82  55  76  55  74 /  10  10  10  10  10  10
Pullman        55  79  50  74  49  74 /   0   0  10  10  10   0
Lewiston       63  89  61  84  60  82 /   0  10  10  10  10   0
Colville       46  82  44  76  46  74 /  20  30  30  30  20  30
Sandpoint      53  80  52  74  52  71 /  10  20  30  20  20  30
Kellogg        61  79  56  73  56  71 /   0  10  10  10  10  10
Moses Lake     58  87  53  81  52  82 /   0   0   0   0   0   0
Wenatchee      63  84  59  78  57  79 /  10   0   0   0   0   0
Omak           56  85  53  78  52  79 /  20  10  10  10  10  10

&&

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

&&

$$