Cold steppe climate
Climate Coulee Dam - Washington
Annual high60ºF
Annual low39ºF
Precipitation10.79 inch
| Month | HighºF | LowºF | Precipinch |
|---|---|---|---|
| Jan | 33 | 23 | 1.06 |
| Feb | 40 | 25 | 0.96 |
| Mar | 51 | 31 | 0.91 |
| Apr | 61 | 37 | 0.87 |
| May | 70 | 45 | 1.15 |
| Jun | 78 | 51 | 1.05 |
| Jul | 87 | 58 | 0.64 |
| Aug | 87 | 57 | 0.28 |
| Sep | 76 | 49 | 0.44 |
| Oct | 61 | 39 | 0.68 |
| Nov | 43 | 30 | 1.30 |
| Dec | 32 | 22 | 1.45 |
- JanHigh 33ºFLow 23ºFPrecip 1.06 inch
- FebHigh 40ºFLow 25ºFPrecip 0.96 inch
- MarHigh 51ºFLow 31ºFPrecip 0.91 inch
- AprHigh 61ºFLow 37ºFPrecip 0.87 inch
- MayHigh 70ºFLow 45ºFPrecip 1.15 inch
- JunHigh 78ºFLow 51ºFPrecip 1.05 inch
- JulHigh 87ºFLow 58ºFPrecip 0.64 inch
- AugHigh 87ºFLow 57ºFPrecip 0.28 inch
- SepHigh 76ºFLow 49ºFPrecip 0.44 inch
- OctHigh 61ºFLow 39ºFPrecip 0.68 inch
- NovHigh 43ºFLow 30ºFPrecip 1.30 inch
- DecHigh 32ºFLow 22ºFPrecip 1.45 inch
Climate summary
What is the average weather in Coulee Dam, Washington?
Coulee Dam experiences a cold semi-arid climate, marked by very large seasonal temperature contrasts due to its inland location. Summers are warm and dry, while winters are cold. Precipitation is generally low throughout the year, with the wettest conditions occurring in winter and the driest in summer.
Coulee Dam weather averages
Annual high60ºF
Annual low39ºF
Precipitation10.79 inch
Daily normals Coulee Dam - Washington - January
| Day | HighºF | LowºF | Prec/ | Prec/ |
|---|---|---|---|---|
| Jan 1 | 31.4 | 22.6 | 0.04 | 0.04 |
| Jan 2 | 31.4 | 22.6 | 0.08 | 0.08 |
| Jan 3 | 31.4 | 22.7 | 0.12 | 0.12 |
| Jan 4 | 31.5 | 22.7 | 0.16 | 0.16 |
| Jan 5 | 31.5 | 22.8 | 0.20 | 0.20 |
| Jan 6 | 31.6 | 22.8 | 0.25 | 0.25 |
| Jan 7 | 31.6 | 22.9 | 0.29 | 0.29 |
| Jan 8 | 31.7 | 22.9 | 0.33 | 0.33 |
| Jan 9 | 31.8 | 23.0 | 0.37 | 0.37 |
| Jan 10 | 31.8 | 23.0 | 0.42 | 0.42 |
| Jan 11 | 31.9 | 23.1 | 0.46 | 0.46 |
| Jan 12 | 32.0 | 23.1 | 0.50 | 0.50 |
| Jan 13 | 32.1 | 23.2 | 0.54 | 0.54 |
| Jan 14 | 32.2 | 23.2 | 0.58 | 0.58 |
| Jan 15 | 32.3 | 23.3 | 0.61 | 0.61 |
| Jan 16 | 32.4 | 23.3 | 0.65 | 0.65 |
| Jan 17 | 32.6 | 23.4 | 0.68 | 0.68 |
| Jan 18 | 32.7 | 23.4 | 0.72 | 0.72 |
| Jan 19 | 32.8 | 23.5 | 0.75 | 0.75 |
| Jan 20 | 33.0 | 23.5 | 0.79 | 0.79 |
| Jan 21 | 33.1 | 23.6 | 0.82 | 0.82 |
| Jan 22 | 33.3 | 23.6 | 0.86 | 0.86 |
| Jan 23 | 33.4 | 23.6 | 0.89 | 0.89 |
| Jan 24 | 33.6 | 23.7 | 0.92 | 0.92 |
| Jan 25 | 33.8 | 23.7 | 0.96 | 0.96 |
| Jan 26 | 34.0 | 23.8 | 0.99 | 0.99 |
| Jan 27 | 34.2 | 23.8 | 1.02 | 1.02 |
| Jan 28 | 34.4 | 23.8 | 1.05 | 1.05 |
| Jan 29 | 34.6 | 23.9 | 1.08 | 1.08 |
| Jan 30 | 34.8 | 23.9 | 1.12 | 1.12 |
| Jan 31 | 35.0 | 23.9 | 1.15 | 1.15 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Coulee Dam - November 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Nov 1 | 54.0 | 39.0 | 0.00 |
| Nov 2 | – | – | – |
| Nov 3 | – | – | – |
| Nov 4 | 50.0 | 39.0 | 0.00 |
| Nov 5 | 48.0 | 30.9 | 0.00 |
| Nov 6 | – | – | – |
| Nov 7 | – | – | – |
| Nov 8 | – | – | – |
| Nov 9 | – | – | – |
| Nov 10 | – | – | – |
| Nov 11 | – | – | – |
| Nov 12 | – | – | – |
| Nov 13 | – | – | – |
| Nov 14 | – | – | – |
| Nov 15 | – | – | – |
| Nov 16 | – | – | – |
| Nov 17 | – | – | – |
| Nov 18 | – | – | – |
| Nov 19 | – | – | – |
| Nov 20 | – | – | – |
| Nov 21 | – | – | – |
| Nov 22 | – | – | – |
| Nov 23 | – | – | – |
| Nov 24 | – | – | – |
| Nov 25 | – | – | – |
| Nov 26 | – | – | – |
| Nov 27 | – | – | – |
| Nov 28 | – | – | – |
| Nov 29 | – | – | – |
| Nov 30 | – | – | – |
The data for November 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature54.0ºF · Nov 1
- Lowest max temperature48.0ºF · Nov 5
- Highest min temperature39.0ºF · Nov 1
- Lowest min temperature30.9ºF · Nov 5
Geo Coulee Dam - Washington
Location
- Country
- United States
- State
- Washington
- County
- Okanogan
- City
- Coulee Dam
- Zip Code
- 99116
- Elevation
- 974 ft
- Longitude
- -118.98
- Latitude
- 47.97
- ICAO
- –
- IATA
- –