Monthly outlook for Coulee Dam, WA: average high 44.6°, average low 36.1°. That is 1.9° above the climate normal for November. Precipitation is expected on 6 days (about 1.3 inches), against a normal of 6 days and 1.3 inches. The warmest day looks like 13 November (50.5°), the coolest 18 November (27.5°).
44.6°/36.1°
Average high / low
+1.9°
Above normal
6 / 6
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 November – 22 November
44.3°
42.9°
+0.8°
23 November – 2 December
45°
37.5°
+4.1°
3 December – 12 December
at normal
34.9°
—
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).
Sat, 1447° / 41°0
47 °
Coulee Dam, Saturday, 14 November
Clear. High 47°, low 41°.
Pressure29.77 inHg
Wind9.3 mph S
Humidity64%
Visibility6.2 mi
Dew point39°
Sun, 1549° / 42°0.17
49 °
Coulee Dam, Sunday, 15 November
Rain. High 49°, low 42°.
Pressure29.88 inHg
Wind8.1 mph SE
Humidity77%
Visibility6.2 mi
Dew point42°
Mon, 1646° / 38°0.01
46 °
Coulee Dam, Monday, 16 November
Light rain. High 46°, low 38°.
Pressure30.00 inHg
Wind2.7 mph S
Humidity83%
Visibility6.2 mi
Dew point40°
Tue, 1740° / 33°0
40 °
Coulee Dam, Tuesday, 17 November
Overcast. High 40°, low 33°.
Pressure30.03 inHg
Wind2.7 mph SE
Humidity84%
Visibility6.2 mi
Dew point35°
Wed, 1844° / 28°0
44 °
Coulee Dam, Wednesday, 18 November
Overcast. High 44°, low 28°.
Pressure30.06 inHg
Wind3.6 mph NE
Humidity85%
Visibility—
Dew point31°
Thu, 1939° / 31°0.11
39 °
Coulee Dam, Thursday, 19 November
Light snow. High 39°, low 31°.
Pressure30.03 inHg
Wind3.4 mph NW
Humidity99%
Visibility—
Dew point35°
Fri, 2042° / 31°0
42 °
Coulee Dam, Friday, 20 November
Partly cloudy. High 42°, low 31°.
Pressure30.18 inHg
Wind4.4 mph NW
Humidity77%
Visibility—
Dew point31°
Sat, 2144° / 33°0
44 °
Coulee Dam, Saturday, 21 November
Overcast. High 44°, low 33°.
Pressure30.36 inHg
Wind5.3 mph NE
Humidity65%
Visibility—
Dew point27°
Sun, 2242° / 33°0
42 °
Coulee Dam, Sunday, 22 November
Overcast. High 42°, low 33°.
Pressure30.30 inHg
Wind4.4 mph N
Humidity55%
Visibility—
Dew point24°
Mon, 2344° / 37°0
44 °
Coulee Dam, Monday, 23 November
Overcast. High 44°, low 37°.
Pressure30.09 inHg
Wind4 mph NW
Humidity57%
Visibility—
Dew point27°
Tue, 2442° / 36°0
42 °
Coulee Dam, Tuesday, 24 November
Overcast. High 42°, low 36°.
Pressure30.21 inHg
Wind5.3 mph E
Humidity63%
Visibility—
Dew point29°
Wed, 2548° / 40°0.16
48 °
Coulee Dam, Wednesday, 25 November
Light rain. High 48°, low 40°.
Pressure30.06 inHg
Wind5.4 mph E
Humidity84%
Visibility—
Dew point38°
Thu, 2644° / 39°0.4
44 °
Coulee Dam, Thursday, 26 November
Rain. High 44°, low 39°.
Pressure29.83 inHg
Wind5.8 mph E
Humidity98%
Visibility—
Dew point44°
Fri, 2748° / 38°0.04
48 °
Coulee Dam, Friday, 27 November
Light rain. High 48°, low 38°.
Pressure29.91 inHg
Wind17.7 mph SW
Humidity84%
Visibility—
Dew point38°
Sat, 2843° / 35°0.43
43 °
Coulee Dam, Saturday, 28 November
Snow. High 43°, low 35°.
Pressure29.77 inHg
Wind20.2 mph S
Humidity100%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Mon, 0734° / 25°0.07
34 °
Coulee Dam, Monday, 7 December
Climate normal for this date — 60-year average.
Average high34°
Average low25°
Average precipitation0.07 in
Chance of precipitation33%
Record high47° (1987)
Record low8° (1971)
Tue, 0834° / 25°0.08
34 °
Coulee Dam, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high34°
Average low25°
Average precipitation0.08 in
Chance of precipitation30%
Record high54° (2015)
Record low5° (1972)
Wed, 0934° / 26°0.08
34 °
Coulee Dam, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high34°
Average low26°
Average precipitation0.08 in
Chance of precipitation38%
Record high51° (2015)
Record low8° (1972)
Thu, 1036° / 26°0.11
36 °
Coulee Dam, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high36°
Average low26°
Average precipitation0.11 in
Chance of precipitation50%
Record high53° (2025)
Record low3° (1961)
Fri, 1135° / 26°0.08
35 °
Coulee Dam, Friday, 11 December
Climate normal for this date — 60-year average.
Average high35°
Average low26°
Average precipitation0.08 in
Chance of precipitation43%
Record high56° (2025)
Record low5° (2000)
Sat, 1234° / 26°0.1
34 °
Coulee Dam, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high34°
Average low26°
Average precipitation0.1 in
Chance of precipitation38%
Record high49° (2014)
Record low2° (2000)
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.