As of 12:08 PDT

Weather in Coulee Dam, WA

45°Current weather

Coulee Dam, Wednesday, 28 October, 12:08

Partly cloudy. Feels like 41°. High 46°, low 35°.

Pressure29.91 inHg
Wind8.7 mph S
Humidity80%
Visibility6.2 mi
Dew point39°

Monthly outlook for Coulee Dam, WA: average high 49.9°, average low 37.2°. That is 0.8° above the climate normal for October. Precipitation is expected on 6 days (about 1.9 inches), against a normal of 5 days and 1.0 inches. The warmest day looks like 6 November (55.3°), the coolest 2 November (29.4°).

49.9°/37.2°
Average high / low
+0.8°
Above normal
6 / 5
Wet days / normal
1.9 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
28 October – 6 November49.2°49.8°-0.3°
7 November – 16 November51°45.7°+3°
17 November – 26 Novemberat normal40.4°—

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).

Thu, 2947° / 33°0.02Light rain
47 °Light rain

Coulee Dam, Thursday, 29 October

Light rain. High 47°, low 33°.

Pressure30.09 inHg
Wind3.2 mph E
Humidity74%
Visibility6.2 mi
Dew point35°
Fri, 3046° / 33°0Overcast
46 °Overcast

Coulee Dam, Friday, 30 October

Overcast. High 46°, low 33°.

Pressure29.94 inHg
Wind3.6 mph W
Humidity69%
Visibility6.2 mi
Dew point34°
Sat, 3143° / 31°0Overcast
43 °Overcast

Coulee Dam, Saturday, 31 October

Overcast. High 43°, low 31°.

Pressure30.06 inHg
Wind2.4 mph NW
Humidity80%
Visibility—
Dew point35°
Sun, 0149° / 31°0Overcast
49 °Overcast

Coulee Dam, Sunday, 1 November

Overcast. High 49°, low 31°.

Pressure30.12 inHg
Wind2.9 mph W
Humidity76%
Visibility3.4 mi
Dew point33°
Mon, 0248° / 29°0Partly cloudy
48 °Partly cloudy

Coulee Dam, Monday, 2 November

Partly cloudy. High 48°, low 29°.

Pressure30.50 inHg
Wind5 mph SE
Humidity68%
Visibility—
Dew point30°
Tue, 0352° / 37°0Overcast
52 °Overcast

Coulee Dam, Tuesday, 3 November

Overcast. High 52°, low 37°.

Pressure30.30 inHg
Wind4.6 mph N
Humidity42%
Visibility—
Dew point24°
Wed, 0453° / 36°0Overcast
53 °Overcast

Coulee Dam, Wednesday, 4 November

Overcast. High 53°, low 36°.

Pressure30.09 inHg
Wind3.7 mph N
Humidity42%
Visibility—
Dew point23°
Thu, 0553° / 37°0Overcast
53 °Overcast

Coulee Dam, Thursday, 5 November

Overcast. High 53°, low 37°.

Pressure30.00 inHg
Wind3.1 mph E
Humidity43%
Visibility—
Dew point25°
Fri, 0655° / 37°0Mostly clear
55 °Mostly clear

Coulee Dam, Friday, 6 November

Mostly clear. High 55°, low 37°.

Pressure30.00 inHg
Wind5.1 mph NE
Humidity47%
Visibility—
Dew point28°
Sat, 0753° / 42°0.71Rain
53 °Rain

Coulee Dam, Saturday, 7 November

Rain. High 53°, low 42°.

Pressure29.77 inHg
Wind5.9 mph NE
Humidity53%
Visibility—
Dew point32°
Sun, 0849° / 44°0.38Rain
49 °Rain

Coulee Dam, Sunday, 8 November

Rain. High 49°, low 44°.

Pressure30.00 inHg
Wind5.2 mph SE
Humidity88%
Visibility—
Dew point43°
Mon, 0954° / 44°0Overcast
54 °Overcast

Coulee Dam, Monday, 9 November

Overcast. High 54°, low 44°.

Pressure30.27 inHg
Wind7.2 mph NE
Humidity77%
Visibility—
Dew point42°
Tue, 1052° / 42°0.08Light rain
52 °Light rain

Coulee Dam, Tuesday, 10 November

Light rain. High 52°, low 42°.

Pressure29.97 inHg
Wind9.5 mph SE
Humidity67%
Visibility—
Dew point36°
Wed, 1147° / 41°0.26Light rain
47 °Light rain

Coulee Dam, Wednesday, 11 November

Light rain. High 47°, low 41°.

Pressure29.85 inHg
Wind7.1 mph E
Humidity89%
Visibility—
Dew point41°
Thu, 1253° / 42°0.33Rain
53 °Rain

Coulee Dam, Thursday, 12 November

Rain. High 53°, low 42°.

Pressure29.44 inHg
Wind15.4 mph S
Humidity78%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 1345° / 35°0.1Climate normal
45 °Climate normal

Coulee Dam, Friday, 13 November

Climate normal for this date — 60-year average.

Average high45°
Average low35°
Average precipitation0.1 in
Chance of precipitation38%
Record high56° (1967)
Record low16° (2000)
Sat, 1445° / 35°0.05Climate normal
45 °Climate normal

Coulee Dam, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high45°
Average low35°
Average precipitation0.05 in
Chance of precipitation23%
Record high62° (2021)
Record low19° (2000)
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)

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.