Monthly outlook for Coulee Dam, WA: average high 51.6°, average low 38.6°. That is 4.1° above the climate normal for November. Precipitation is expected on 4 days (about 0.5 inches), against a normal of 6 days and 1.2 inches. The warmest day looks like 13 November (57.9°), the coolest 19 November (33.7°).
51.6°/38.6°
Average high / low
+4.1°
Above normal
4 / 6
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 November – 16 November
54°
45.7°
+4.6°
17 November – 26 November
47.5°
40.4°
+4°
27 November – 6 December
at normal
36.3°
—
November records over 66 years
63°1 November 1988All-time high
-10.8°28 November 1985All-time low
Climate normals and records are computed from the nearest reference point — Grand Coulee (2 mi).
Sun, 0854° / 40°0
54 °
Coulee Dam, Sunday, 8 November
Overcast. High 54°, low 40°.
Pressure30.03 inHg
Wind16 mph SW
Humidity51%
Visibility6.2 mi
Dew point36°
Mon, 0946° / 37°0.07
46 °
Coulee Dam, Monday, 9 November
Light rain. High 46°, low 37°.
Pressure30.12 inHg
Wind4 mph SE
Humidity83%
Visibility2.7 mi
Dew point41°
Tue, 1052° / 40°0.02
52 °
Coulee Dam, Tuesday, 10 November
Light rain. High 52°, low 40°.
Pressure30.15 inHg
Wind4.5 mph SE
Humidity86%
Visibility6.2 mi
Dew point45°
Wed, 1157° / 40°0
57 °
Coulee Dam, Wednesday, 11 November
Overcast. High 57°, low 40°.
Pressure30.09 inHg
Wind4.3 mph E
Humidity92%
Visibility—
Dew point45°
Thu, 1256° / 38°0
56 °
Coulee Dam, Thursday, 12 November
Overcast. High 56°, low 38°.
Pressure29.91 inHg
Wind4.9 mph SE
Humidity84%
Visibility—
Dew point41°
Fri, 1358° / 40°0
58 °
Coulee Dam, Friday, 13 November
Overcast. High 58°, low 40°.
Pressure29.85 inHg
Wind6.7 mph SE
Humidity67%
Visibility—
Dew point39°
Sat, 1456° / 47°0.05
56 °
Coulee Dam, Saturday, 14 November
Light rain. High 56°, low 47°.
Pressure29.74 inHg
Wind7 mph E
Humidity62%
Visibility—
Dew point39°
Sun, 1554° / 43°0.26
54 °
Coulee Dam, Sunday, 15 November
Light rain. High 54°, low 43°.
Pressure29.62 inHg
Wind20.1 mph S
Humidity83%
Visibility—
Dew point45°
Mon, 1653° / 41°0
53 °
Coulee Dam, Monday, 16 November
Overcast. High 53°, low 41°.
Pressure30.03 inHg
Wind10.7 mph SW
Humidity71%
Visibility—
Dew point37°
Tue, 1749° / 37°0
49 °
Coulee Dam, Tuesday, 17 November
Overcast. High 49°, low 37°.
Pressure30.15 inHg
Wind5.7 mph E
Humidity68%
Visibility—
Dew point33°
Wed, 1847° / 38°0.06
47 °
Coulee Dam, Wednesday, 18 November
Light rain. High 47°, low 38°.
Pressure30.06 inHg
Wind5.6 mph SW
Humidity88%
Visibility—
Dew point41°
Thu, 1946° / 34°0
46 °
Coulee Dam, Thursday, 19 November
Partly cloudy. High 46°, low 34°.
Pressure30.42 inHg
Wind3.8 mph NE
Humidity74%
Visibility—
Dew point33°
Fri, 2048° / 34°0
48 °
Coulee Dam, Friday, 20 November
Overcast. High 48°, low 34°.
Pressure30.53 inHg
Wind4.3 mph NE
Humidity71%
Visibility—
Dew point33°
Sat, 2147° / 34°0
47 °
Coulee Dam, Saturday, 21 November
Overcast. High 47°, low 34°.
Pressure30.39 inHg
Wind4.4 mph NE
Humidity68%
Visibility—
Dew point32°
Sun, 2248° / 34°0
48 °
Coulee Dam, Sunday, 22 November
Overcast. High 48°, low 34°.
Pressure30.21 inHg
Wind3.7 mph NE
Humidity55%
Visibility—
Dew point27°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2339° / 30°0.08
39 °
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°0.08
39 °
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°0.07
38 °
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°0.04
38 °
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°0.09
38 °
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°0.06
37 °
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)
Sun, 2937° / 27°0.06
37 °
Coulee Dam, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high37°
Average low27°
Average precipitation0.06 in
Chance of precipitation37%
Record high53° (1995)
Record low-8° (1985)
Mon, 3037° / 28°0.09
37 °
Coulee Dam, Monday, 30 November
Climate normal for this date — 60-year average.
Average high37°
Average low28°
Average precipitation0.09 in
Chance of precipitation38%
Record high53° (2021)
Record low2° (1985)
Tue, 0137° / 28°0.11
37 °
Coulee Dam, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high37°
Average low28°
Average precipitation0.11 in
Chance of precipitation47%
Record high61° (2021)
Record low-10° (1985)
Wed, 0237° / 28°0.11
37 °
Coulee Dam, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high37°
Average low28°
Average precipitation0.11 in
Chance of precipitation45%
Record high55° (2021)
Record low-2° (1985)
Thu, 0337° / 28°0.1
37 °
Coulee Dam, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high37°
Average low28°
Average precipitation0.1 in
Chance of precipitation40%
Record high50° (2007)
Record low6° (1984)
Fri, 0436° / 26°0.08
36 °
Coulee Dam, Friday, 4 December
Climate normal for this date — 60-year average.
Average high36°
Average low26°
Average precipitation0.08 in
Chance of precipitation35%
Record high54° (2007)
Record low7° (1994)
Sat, 0535° / 26°0.06
35 °
Coulee Dam, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high35°
Average low26°
Average precipitation0.06 in
Chance of precipitation33%
Record high47° (2012)
Record low9° (1984)
Sun, 0635° / 26°0.09
35 °
Coulee Dam, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high35°
Average low26°
Average precipitation0.09 in
Chance of precipitation35%
Record high50° (1987)
Record low10° (1992)
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.