Coulee Dam, WA Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Coulee Dam, WA.

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Current Conditions — Coulee Dam, WA

OMAK (KOMK)

Clear

35.6 F
Humidity:51%
Wind Speed: 5.7 mph
Barometer:29.79 in
Dewpoint:19.4 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:30.7 F
Apr 26 2026, 01:00 AM PDT
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5-Day Forecast — Coulee Dam, WA

Sunday

High 57 °F
Forecast Missing
Sunday
Night
Low 35 °F
Forecast Missing
Monday

High 62 °F
Forecast Missing
Monday
Night
Low 41 °F
Forecast Missing
Tuesday

High 62 °F
Forecast Missing
Tuesday
Night
Low 42 °F
Forecast Missing
Wednesday

High 66 °F
Forecast Missing
Wednesday
Night
Low 46 °F
Forecast Missing
Thursday

High 69 °F
Forecast Missing

Detailed Forecast — Coulee Dam, WA

Sunday
Forecast Missing. High near 57°F. Wind 3 to 7 mph, with gusts as high as 14 mph.
Sunday Night
Forecast Missing. Low around 35°F. Wind 2 to 6 mph, with gusts as high as 10 mph.
Monday
Forecast Missing. High near 62°F. Wind 2 to 6 mph, with gusts as high as 12 mph.
Monday Night
Forecast Missing. Low around 41°F. Wind 2 to 6 mph, with gusts as high as 10 mph.
Tuesday
Forecast Missing. High near 62°F. Wind 2 to 6 mph, with gusts as high as 12 mph.
Tuesday Night
Forecast Missing. Low around 42°F. Wind 2 to 3 mph, with gusts as high as 7 mph.
Wednesday
Forecast Missing. High near 66°F. Wind 3 to 5 mph, with gusts as high as 9 mph.
Wednesday Night
Forecast Missing. Low around 46°F. Wind around 3 mph, with gusts as high as 6 mph.
Thursday
Forecast Missing. High near 69°F. Wind 6 to 7 mph, with gusts as high as 13 mph.
Thursday Night
Forecast Missing. Low around 46°F. Wind 3 to 5 mph, with gusts as high as 8 mph.
Friday
Forecast Missing. High near 71°F. Wind 6 to 7 mph, with gusts as high as 14 mph.
Friday Night
Forecast Missing. Low around 48°F. Wind 5 to 6 mph, with gusts as high as 9 mph.
Saturday
Forecast Missing. High near 73°F. Wind around 6 mph, with gusts as high as 12 mph.
WA Radar
Current Radar • WA
Day 1 Outlook • April 26, 2026

Observation History — Coulee Dam, WA

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
01:00 AM PDT 5.7 10.00 Clear -- 35.6 19.4 51% 30.7 NA 29.79 1008.8
12:50 AM PDT NW 5.7 10.00 Clear -- 37.4 19.4 48% 32.9 NA 29.79 1008.8
12:45 AM PDT 6.9 10.00 Clear -- 37.4 19.4 48% 32.0 NA 29.79 1008.8
12:40 AM PDT NW 6.9 10.00 Clear -- 37.4 19.4 48% 32.0 NA 29.79 1008.8
12:35 AM PDT 6.9 10.00 Clear -- 37.4 19.4 48% 32.0 NA 29.79 1008.8
12:25 AM PDT NW 4.6 10.00 Clear -- 35.6 19.4 51% 31.6 NA 29.79 1008.8
12:10 AM PDT NW 5.7 10.00 Clear -- 37.4 19.4 48% 32.9 NA 29.79 1008.8
12:05 AM PDT NW 6.9 10.00 Clear -- 37.4 19.4 48% 32.0 NA 29.79 1008.8
12:00 AM PDT 6.9 10.00 Clear -- 37.4 19.4 48% 32.0 NA 29.79 1008.8
11:50 PM PDT 6.9 10.00 Clear -- 41.0 17.6 38% 36.3 NA 29.79 1008.8
11:40 PM PDT 8.1 10.00 Clear -- 41.0 19.4 42% 35.8 NA 29.79 1008.8
11:35 PM PDT 8.1 10.00 Clear -- 39.2 19.4 45% 33.6 NA 29.79 1008.8
11:30 PM PDT NW 9.2 10.00 Clear -- 41.0 19.4 42% 35.2 NA 29.79 1008.8
11:25 PM PDT NW 9.2 10.00 Clear -- 39.2 19.4 45% 33.1 NA 29.79 1008.8
11:10 PM PDT 6.9 10.00 Clear -- 39.2 19.4 45% 34.2 NA 29.79 1008.8
11:00 PM PDT NW 6.9 10.00 Clear -- 42.8 17.6 36% 38.5 NA 29.79 1008.8
10:50 PM PDT 8.1 10.00 Clear -- 42.8 19.4 39% 37.9 NA 29.79 1008.8
10:45 PM PDT NW 6.9 10.00 Clear -- 42.8 19.4 39% 38.5 NA 29.79 1008.8
10:40 PM PDT NW 8.1 10.00 Clear -- 44.6 19.4 36% 40.1 NA 29.79 1008.8
10:35 PM PDT NW 11.5 10.00 Clear -- 44.6 19.4 36% 38.8 NA 29.79 1008.8
10:25 PM PDT 11.5 10.00 Clear -- 44.6 19.4 36% 38.8 NA 29.79 1008.8
10:20 PM PDT 12.7 10.00 Clear -- 44.6 19.4 36% 38.5 NA 29.79 1008.8
10:10 PM PDT 11.5 10.00 Mostly Clear -- 44.6 19.4 36% 38.8 NA 29.79 1008.8
10:05 PM PDT NW 12.7 10.00 Mostly Clear -- 46.4 19.4 34% 40.6 NA 29.79 1008.8

Regional Weather Observation

OMAK (KOMK)

Clear
35.6 F

METHOW VALLEY (KS52)

Mostly Cloudy
NULL F

EPHRATA (KEPH)

Clear
42.8 F

MOSES LAKE (KMWH)

Clear
35.6 F

WENATCHEE (KEAT)

Clear
44.6 F

ELLENSBURG (KELN)

Clear
37.4 F
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