Weather in Coulee Dam, WA
Coulee Dam, Thursday, 12 November, 06:51
Overcast. Feels like 44°. High 55°, low 44°.
Monthly outlook for Coulee Dam, WA: average high 42.1°, average low 30.8°. That is 0.3° above the climate normal for November. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 6 days and 1.3 inches. The warmest day looks like 13 November (58.6°), the coolest 26 November (12°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 12 November – 21 November | 48° | 43.5° | +2.5° |
| 22 November – 1 December | 32.3° | 37.8° | -3.1° |
| 2 December – 11 December | at normal | 35.2° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Grand Coulee (2 mi).
0Coulee Dam, Friday, 13 November
Overcast. High 59°, low 42°.
0
Coulee Dam, Saturday, 14 November
Mostly clear. High 53°, low 40°.
0.26
Coulee Dam, Sunday, 15 November
Light rain. High 46°, low 40°.
0.01Coulee Dam, Monday, 16 November
Light rain. High 42°, low 35°.
0Coulee Dam, Tuesday, 17 November
Overcast. High 40°, low 31°.
0Coulee Dam, Wednesday, 18 November
Overcast. High 46°, low 32°.
0Coulee Dam, Thursday, 19 November
Overcast. High 46°, low 38°.
0Coulee Dam, Friday, 20 November
Overcast. High 50°, low 35°.
0Coulee Dam, Saturday, 21 November
Overcast. High 43°, low 32°.
0Coulee Dam, Sunday, 22 November
Overcast. High 38°, low 29°.
0.01Coulee Dam, Monday, 23 November
Light rain. High 38°, low 29°.
0.03
Coulee Dam, Tuesday, 24 November
Light snow. High 37°, low 24°.
0Coulee Dam, Wednesday, 25 November
Overcast. High 31°, low 18°.
0
Coulee Dam, Thursday, 26 November
Clear. High 26°, low 12°.
0Coulee Dam, Friday, 27 November
Clear. High 24°, low 12°.
0.06
Coulee Dam, Saturday, 28 November
Climate normal for this date — 60-year average.
0.06
Coulee Dam, Sunday, 29 November
Climate normal for this date — 60-year average.
0.09Coulee Dam, Monday, 30 November
Climate normal for this date — 60-year average.
0.11Coulee Dam, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.11Coulee Dam, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.1Coulee Dam, Thursday, 3 December
Climate normal for this date — 60-year average.
0.08Coulee Dam, Friday, 4 December
Climate normal for this date — 60-year average.
0.06Coulee Dam, Saturday, 5 December
Climate normal for this date — 60-year average.
0.09Coulee Dam, Sunday, 6 December
Climate normal for this date — 60-year average.
0.07Coulee Dam, Monday, 7 December
Climate normal for this date — 60-year average.
0.08Coulee Dam, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.08Coulee Dam, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.11Coulee Dam, Thursday, 10 December
Climate normal for this date — 60-year average.
0.08Coulee Dam, Friday, 11 December
Climate normal for this date — 60-year average.
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.
Sun and moon today
Weather history
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