Lewiston, Idaho 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

719
FXUS66 KOTX 281939
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
1239 PM PDT Sat Jun 28 2025

.KEY MESSAGES...

- Temperatures trending much warmer Sunday through mid next week
  including Moderate HeatRisk Monday through Wednesday.

- Temperatures trending cooler but still warm Thursday and
  Independence Day

- Uncertainty in a pattern change that could bring showers and
  convection starting Wednesday.


&&

.SYNOPSIS...
Temperatures will trend much warmer beginning Sunday, and
continue through the middle of next week. Temperatures will
cool slightly for the middle to end of next week but will remain
above normal.

&&

.DISCUSSION...

Tonight through Tuesday: The ridge of high pressure begins to
build through early next week, with warming temperatures and
drying conditions. Temperatures will warm into the 90s by
Monday, with upper 90s and low 100s by Tuesday. A Heat Advisory
has been issued for much of the lower elevations with the
exception of the Cascades and Kellogg/Lookout Pass area. The
Heat Advisory is active from 9 AM Monday through 9 PM Tuesday.
Make sure to take care in the heat by drinking plenty of fluids,
staying in an air-conditioned room, staying out of the sun, and
check up on relatives and neighbors.

Wednesday through Friday: By Wednesday, ensemble data begins to
show differences. While some want to continue with the hot
and dry conditions, others try to bring a shortwave across that
would drop temperatures down into the upper 80s to low 90s
along with breezy conditions and the potential for elevated
convection by mid week. Cascade gap winds also are a concern for
Wednesday as the ridge shifts east, especially after the warm
and dry conditions earlier in the week. By Thursday and the
Fourth of July, ensembles are in agreement of a return to a warm
and dry forecast. Make sure to take precautions in the heat.

&&

.AVIATION...
00Z TAFS: VFR conditions will prevail. Winds will be breezy in
the afternoon, although speeds will be less than previous
afternoons with gusts up to 20 knots.

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence
of VFR conditions for all TAF sites.

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

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        52  85  57  93  61  95 /   0   0   0   0   0   0
Coeur d`Alene  52  84  57  92  60  95 /   0   0   0   0   0   0
Pullman        48  83  54  91  58  93 /   0   0   0   0   0   0
Lewiston       58  92  62  99  66 101 /   0   0   0   0   0   0
Colville       44  85  48  91  52  95 /   0   0   0   0   0   0
Sandpoint      49  82  51  90  55  93 /   0   0   0   0   0   0
Kellogg        56  81  60  90  65  93 /   0   0   0   0   0   0
Moses Lake     54  90  57  98  62 100 /   0   0   0   0   0   0
Wenatchee      59  90  66  96  69  98 /   0   0   0   0   0   0
Omak           54  90  59  96  62  98 /   0   0   0   0   0   0

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
WA...Heat Advisory from 9 AM Monday to 9 PM PDT Tuesday for Lower
     Garfield and Asotin Counties-Moses Lake Area-Northeast
     Mountains-Okanogan Highlands-Okanogan Valley-Spokane Area-
     Upper Columbia Basin-Washington Palouse-Waterville
     Plateau-Wenatchee Area.
ID...Heat Advisory from 9 AM Monday to 9 PM PDT Tuesday for Coeur
     d`Alene Area-Idaho Palouse-Lewis and Southern Nez Perce
     Counties-Lewiston Area-Northern Panhandle.

&&

$$