Nezperce, Idaho Weather Forecast Discussion

366
FXUS66 KOTX 172128
AFDOTX
Area Forecast Discussion
National Weather Service Spokane WA
228 PM PDT Wed Sep 17 2025
.KEY MESSAGES...
- Warm and dry through the end of the week.
- Weekend cold front to deliver breezy conditions and a chance
  of mainly mountain showers
&&
.SYNOPSIS...
High pressure over the region will bring warm and dry
conditions through the work week. Unsettled weather returns this
weekend with breezy winds and a chance of mainly mountain
showers.
&&
.DISCUSSION...
Today through Friday: The ridge currently in place over the state
has raised temperatures to roughly ten degrees above normal for this
time of year. High temperatures today will be in the mid to high
80s, with low temperatures in the low to mid 50s. These temperatures
will stay very similar through Friday, even as the ridge moves
eastward and out of the area. Conditions will continue drying, with
relative humidities dropping into the low to mid 20s. Overall,
though, through Friday conditions will remain warm and dry.
Saturday through Monday: On Saturday, a low pressure off the coast
of Alaska will slide down to the PNW coast, bringing a cooler and
windier pattern change to the area, as well as some chances for
precipitation. Temperatures lower slightly from Friday to Saturday,
but the real change happens on Sunday. Temperatures will drop from
the mid-80s down into the mid-70s, and a cold front passage will
bring breezy to gusty westerly winds through the area on Saturday,
Sunday, and Monday. On Saturday and Monday, wind gusts could reach
15-20 mph in some areas, with the Waterville Plateau seeing slightly
higher wind gusts up to 25 mph. Sunday will be the windiest of the
three days, with largely widespread wind gusts up to 15 25 mph,
including the Spokane/Coeur d`Alene, Lewiston/Pullman, Moses Lake,
Waterville Plateau, and Upper Columbia Basin areas. This could lead
to some fire weather headlines even though relative humidity values
are not critical due to dry fuels. This will mostly be a dry cold
front, with rain only anticipated in mountain areas.
Tuesday through Wednesday: On Tuesday, another ridge will build over
the area, this time over much of the Western US. A low pressure
system sitting off the Pacific Coast could push a couple shortwaves
into the area, bringing light amounts of precipitation. This
precipitation will be confined to eastern Washington, Okanogan
Valley and Highlands, and Western Okanogan County. Precipitation
amounts will be less than a tenth of an inch. However, cluster
consensus varies on how strong the ridge will be and where the ridge
axis is. A couple of the clusters show the low off the Pacific Coast
strengthening, but a couple of the clusters have the low weakening.
There is also variability on the duration of the broad ridge. There
is overall agreement on a low pressure system moving in off the PNW
coast near the end of the next week, which could bring a more active
weather pattern to the state next weekend, but since clusters are
struggling to agree we will have to watch and see how the forecast
evolves. /AS
&&
.AVIATION...
18Z TAFS: High pressure over the region will deliver clear
skies and light terrain driven winds through the forecast
period.
FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence
in VFR conditions for TAF sites through 18z Thursday.
-----------------------
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:/weather.gov/otx/avndashboard
&&
.Preliminary Point Temps/PoPs...
Spokane        54  84  55  84  54  83 /   0   0   0   0   0   0
Coeur d`Alene  56  84  56  84  55  83 /   0   0   0   0   0   0
Pullman        51  83  52  81  51  80 /   0   0   0   0   0   0
Lewiston       59  87  61  87  60  87 /   0   0   0   0   0   0
Colville       44  84  44  84  44  82 /   0   0   0   0   0   0
Sandpoint      49  82  51  82  49  80 /   0   0   0   0   0   0
Kellogg        58  83  58  82  58  80 /   0   0   0   0   0   0
Moses Lake     51  85  53  86  51  84 /   0   0   0   0   0   0
Wenatchee      60  84  60  86  59  84 /   0   0   0   0   0   0
Omak           56  85  56  86  54  84 /   0   0   0   0   0   0
&&
.OTX WATCHES/WARNINGS/ADVISORIES...
WA...None.
ID...None.
&&
$$

NWS OTX Office Area Forecast Discussion