Chinook, WA Weather
Chinook, WA climate is cool during summer when temperatures tend to be in the 50's and cold during winter when temperatures tend to be in the 40's.
The warmest month of the year is September with an average maximum temperature of 67.00 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 35.20 degrees Fahrenheit.
Temperature variations between night and day tend to be fairly limited during summer with a difference that can reach 15 degrees Fahrenheit, and fairly limited during winter with an average difference of 13 degrees Fahrenheit.
The annual average precipitation at Chinook is 81.19 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is December with an average rainfall of 12.37 Inches.
Weather Data
Current Conditions
|
Mostly Cloudy, 40°F | Humidity: 93% | Dewpoint: 38°F |
| Wind Speed: E 5 MPH | Heat Index: 40°F | ||
| Barometer: 30.26 in. | Wind Chill: 37°F |
Weather Forecast
 | Tonight: Partly cloudy with areas of fog. Lows 35 to 40. Southeast wind 5 to 10 mph. | |
| Lo: 38°F | ||
| Hi: 58°F | Sunday: Mostly sunny. Areas of fog in the morning. Highs 55 to 60. East wind 5 to 15 mph. |
| Lo: 40°F | ||
 | Hi: 55°F | Monday: Mostly sunny. Highs around 55. Southeast wind 5 to 15 mph. |
| Lo: 43°F | ||
 | Hi: 53°F | Tuesday: Mostly cloudy with a slight chance of showers. Highs 50 to 55. |
| Lo: 43°F | ||
 | Hi: 53°F | Wednesday: Partly sunny. Highs 50 to 55. |
| Lo: 43°F | ||
| Hi: 53°F | Thanksgiving day: Mostly cloudy with a slight chance of rain. Highs 50 to 55. |
| Lo: 40°F | ||
 | Hi: 53°F | Friday: Partly cloudy with a slight chance of showers. Highs 50 to 55. |
| Lo: 40°F |
Moon, Sunrise and Sunset
 |
Moon Phase: Waning Crescent Moon | Civil Twilight: 6:54 AM PST |
Sunrise: 7:27 AM PST |
| Sunset: 4:36 PM PST |
Civil Twilight: 5:09 PM PST |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 47.9 | 50.2 | 52.8 | 55.6 | 59.5 | 62.6 | 65.6 | 66.7 | 67.0 | 60.9 | 52.9 | 48.4 | 57.5 |
| Mean °F | 41.6 | 43.4 | 45.5 | 48.1 | 52.2 | 55.8 | 58.7 | 59.1 | 57.3 | 51.4 | 45.9 | 42.1 | 50.1 |
| Min °F | 35.2 | 36.5 | 38.2 | 40.6 | 44.9 | 49.0 | 51.7 | 51.5 | 47.6 | 41.9 | 38.9 | 35.7 | 42.6 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 11.61 | 9.91 | 9.02 | 6.02 | 3.92 | 2.99 | 1.69 | 1.79 | 3.29 | 6.76 | 11.82 | 12.37 | 81.19 |
