Cosmopolis, WA Weather
Cosmopolis, WA climate is mild during summer when temperatures tend to be in the 60's and cold during winter when temperatures tend to be in the 40's.
The warmest month of the year is August with an average maximum temperature of 69.10 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 36.10 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 12 degrees Fahrenheit.
The annual average precipitation at Cosmopolis is 83.71 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is December with an average rainfall of 13.07 Inches.
Weather Data
Current Conditions
|
Overcast, 36°F | Humidity: 97% | Dewpoint: 35°F |
| Wind Speed: NE 7 MPH | Heat Index: 36°F | ||
| Barometer: 30.27 in. | Wind Chill: 30°F |
Weather Forecast
 | Tonight: Partly cloudy. Patchy fog. Lows in the upper 30s to mid 40s. Light wind becoming east around 10 mph after midnight. | |
| Lo: 40°F | ||
 | Hi: 50°F | Sunday: Mostly sunny. Patchy morning fog. Highs in the upper 40s to mid 50s. East wind 10 to 15 mph. |
| Lo: 40°F | ||
 | Hi: 50°F | Monday: Partly sunny. Highs in the upper 40s to mid 50s. Southeast wind 10 to 15 mph. |
| Lo: 40°F | ||
 | Hi: 51°F | Tuesday: Cloudy with a chance of rain. Highs in the lower 50s. |
| Lo: 41°F | ||
| Hi: 50°F | Wednesday: Mostly sunny. Highs around 50. |
| Lo: 40°F | ||
| Hi: 50°F | Thanksgiving day: Mostly sunny. Highs around 50. |
| Lo: 40°F | ||
| Hi: 50°F | Friday: Mostly sunny. Highs around 50. |
| Lo: 41°F |
Moon, Sunrise and Sunset
 |
Moon Phase: Waning Crescent Moon | Civil Twilight: 6:55 AM PST |
Sunrise: 7:29 AM PST |
| Sunset: 4:33 PM PST |
Civil Twilight: 5:07 PM PST |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 46.6 | 49.8 | 53.3 | 56.6 | 60.9 | 64.2 | 68.0 | 69.1 | 68.7 | 61.1 | 51.7 | 46.6 | 58.1 |
| Mean °F | 41.4 | 43.3 | 45.8 | 48.8 | 53.4 | 57.3 | 60.7 | 61.5 | 59.5 | 52.7 | 45.6 | 41.5 | 51.0 |
| Min °F | 36.1 | 36.8 | 38.2 | 41.0 | 45.9 | 50.3 | 53.4 | 53.8 | 50.2 | 44.2 | 39.4 | 36.3 | 43.8 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 12.53 | 10.57 | 9.08 | 6.18 | 3.74 | 2.62 | 1.48 | 1.70 | 3.12 | 6.98 | 12.64 | 13.07 | 83.71 |
