As of 21:25 PDT

Weather in Coulee Dam, WA

40°Current weather

Coulee Dam, Friday, 30 October, 21:25

Overcast. Feels like 40°. High 49°, low 37°.

Pressure29.94 inHg
Wind0.4 mph NE
Humidity84%
Visibility6.2 mi
Dew point36°

Monthly outlook for Coulee Dam, WA: average high 51.6°, average low 37.2°. That is 2.1° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 5 days and 1.1 inches. The warmest day looks like 8 November (57.8°), the coolest 4 November (32.1°).

51.6°/37.2°
Average high / low
+2.1°
Above normal
3 / 5
Wet days / normal
0.5 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
30 October – 8 November52.4°49°+1.9°
9 November – 18 November50.2°44.9°+3°
19 November – 28 Novemberat normal39.3°—

October records over 66 years

86°1 October 1992All-time high
15.4°31 October 1984All-time low

Climate normals and records are computed from the nearest reference point — Grand Coulee (2 mi).

Sat, 3151° / 36°0Partly cloudy
51 °Partly cloudy

Coulee Dam, Saturday, 31 October

Partly cloudy. High 51°, low 36°.

Pressure30.09 inHg
Wind2.5 mph W
Humidity75%
Visibility0.3 mi
Dew point35°
Sun, 0152° / 37°0Clear
52 °Clear

Coulee Dam, Sunday, 1 November

Clear. High 52°, low 37°.

Pressure30.03 inHg
Wind2 mph W
Humidity66%
Visibility1.0 mi
Dew point33°
Mon, 0251° / 32°0Partly cloudy
51 °Partly cloudy

Coulee Dam, Monday, 2 November

Partly cloudy. High 51°, low 32°.

Pressure30.36 inHg
Wind3.5 mph SE
Humidity68%
Visibility0.6 mi
Dew point36°
Tue, 0352° / 38°0Overcast
52 °Overcast

Coulee Dam, Tuesday, 3 November

Overcast. High 52°, low 38°.

Pressure30.30 inHg
Wind1.2 mph E
Humidity69%
Visibility6.2 mi
Dew point36°
Wed, 0456° / 32°0Mostly clear
56 °Mostly clear

Coulee Dam, Wednesday, 4 November

Mostly clear. High 56°, low 32°.

Pressure30.09 inHg
Wind3 mph W
Humidity58%
Visibility—
Dew point30°
Thu, 0554° / 36°0Overcast
54 °Overcast

Coulee Dam, Thursday, 5 November

Overcast. High 54°, low 36°.

Pressure29.91 inHg
Wind4.4 mph E
Humidity66%
Visibility—
Dew point34°
Fri, 0651° / 39°0.16Rain
51 °Rain

Coulee Dam, Friday, 6 November

Rain. High 51°, low 39°.

Pressure29.83 inHg
Wind7.2 mph E
Humidity78%
Visibility—
Dew point39°
Sat, 0750° / 35°0Overcast
50 °Overcast

Coulee Dam, Saturday, 7 November

Overcast. High 50°, low 35°.

Pressure30.30 inHg
Wind7.3 mph SE
Humidity74%
Visibility—
Dew point34°
Sun, 0858° / 40°0Overcast
58 °Overcast

Coulee Dam, Sunday, 8 November

Overcast. High 58°, low 40°.

Pressure30.24 inHg
Wind4.8 mph E
Humidity54%
Visibility—
Dew point33°
Mon, 0956° / 46°0.06Light rain
56 °Light rain

Coulee Dam, Monday, 9 November

Light rain. High 56°, low 46°.

Pressure30.15 inHg
Wind6.1 mph SE
Humidity49%
Visibility—
Dew point33°
Tue, 1052° / 40°0.01Light rain
52 °Light rain

Coulee Dam, Tuesday, 10 November

Light rain. High 52°, low 40°.

Pressure30.15 inHg
Wind6.6 mph S
Humidity84%
Visibility—
Dew point42°
Wed, 1152° / 38°0Partly cloudy
52 °Partly cloudy

Coulee Dam, Wednesday, 11 November

Partly cloudy. High 52°, low 38°.

Pressure30.12 inHg
Wind10.4 mph W
Humidity62%
Visibility—
Dew point35°
Thu, 1251° / 32°0Partly cloudy
51 °Partly cloudy

Coulee Dam, Thursday, 12 November

Partly cloudy. High 51°, low 32°.

Pressure30.33 inHg
Wind5 mph NE
Humidity49%
Visibility—
Dew point25°
Fri, 1348° / 35°0Overcast
48 °Overcast

Coulee Dam, Friday, 13 November

Overcast. High 48°, low 35°.

Pressure29.97 inHg
Wind5.4 mph S
Humidity38%
Visibility—
Dew point19°
Sat, 1442° / 42°0.28Light rain
42 °Light rain

Coulee Dam, Saturday, 14 November

Light rain. High 42°, low 42°.

Pressure29.97 inHg
Wind3.9 mph NE
Humidity75%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 1545° / 34°0.08Climate normal
45 °Climate normal

Coulee Dam, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high45°
Average low34°
Average precipitation0.08 in
Chance of precipitation37%
Record high59° (2021)
Record low19° (2000)
Mon, 1644° / 34°0.08Climate normal
44 °Climate normal

Coulee Dam, Monday, 16 November

Climate normal for this date — 60-year average.

Average high44°
Average low34°
Average precipitation0.08 in
Chance of precipitation43%
Record high57° (1999)
Record low21° (2022)
Tue, 1744° / 34°0.09Climate normal
44 °Climate normal

Coulee Dam, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high44°
Average low34°
Average precipitation0.09 in
Chance of precipitation37%
Record high56° (1976)
Record low19° (2000)
Wed, 1843° / 32°0.05Climate normal
43 °Climate normal

Coulee Dam, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high43°
Average low32°
Average precipitation0.05 in
Chance of precipitation32%
Record high53° (2003)
Record low16° (1985)
Thu, 1942° / 32°0.1Climate normal
42 °Climate normal

Coulee Dam, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high42°
Average low32°
Average precipitation0.1 in
Chance of precipitation43%
Record high52° (2002)
Record low7° (1985)
Fri, 2042° / 32°0.09Climate normal
42 °Climate normal

Coulee Dam, Friday, 20 November

Climate normal for this date — 60-year average.

Average high42°
Average low32°
Average precipitation0.09 in
Chance of precipitation42%
Record high52° (1962)
Record low13° (1985)
Sat, 2140° / 31°0.09Climate normal
40 °Climate normal

Coulee Dam, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high40°
Average low31°
Average precipitation0.09 in
Chance of precipitation35%
Record high54° (1974)
Record low-1° (1985)
Sun, 2240° / 30°0.09Climate normal
40 °Climate normal

Coulee Dam, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high40°
Average low30°
Average precipitation0.09 in
Chance of precipitation35%
Record high53° (2017)
Record low4° (1985)
Mon, 2339° / 30°0.08Climate normal
39 °Climate normal

Coulee Dam, Monday, 23 November

Climate normal for this date — 60-year average.

Average high39°
Average low30°
Average precipitation0.08 in
Chance of precipitation45%
Record high54° (2011)
Record low-2° (1985)
Tue, 2439° / 30°0.08Climate normal
39 °Climate normal

Coulee Dam, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high39°
Average low30°
Average precipitation0.08 in
Chance of precipitation37%
Record high52° (2004)
Record low0° (1985)
Wed, 2538° / 29°0.07Climate normal
38 °Climate normal

Coulee Dam, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high38°
Average low29°
Average precipitation0.07 in
Chance of precipitation32%
Record high53° (2004)
Record low3° (1985)
Thu, 2638° / 28°0.04Climate normal
38 °Climate normal

Coulee Dam, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high38°
Average low28°
Average precipitation0.04 in
Chance of precipitation25%
Record high51° (1998)
Record low5° (1985)
Fri, 2738° / 29°0.09Climate normal
38 °Climate normal

Coulee Dam, Friday, 27 November

Climate normal for this date — 60-year average.

Average high38°
Average low29°
Average precipitation0.09 in
Chance of precipitation40%
Record high53° (2014)
Record low1° (1985)
Sat, 2837° / 28°0.06Climate normal
37 °Climate normal

Coulee Dam, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high37°
Average low28°
Average precipitation0.06 in
Chance of precipitation27%
Record high55° (2021)
Record low-11° (1985)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Coulee Dam, WA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Coulee Dam, WA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.