Washington Weather: December
 |
Average Day Temperature: | 45.4°F |
|
Average Night Temperature: | 37.2°F |
|
Sea Water Temperature: | 45.9°F |
|
Number of Sunny Days: | 13 days |
| Sunshine Hours: | 9.4 - 9.6 hours | |
|
Number of Rainy Days: | 3 days |
| Precipitation Totals: | 2.1 in | |
| detailed information | ||
forecast
| Washington |
Temperature
| Washington |
Air Temperature in December, °F
The highest day temperature in December 2025 was 57°F. The lowest night temperature was 12°F. The average values for day and night temperatures during December were 42.0°F и 30.2°F respectivly.
Washington Water Sea Temperature in December, °F
The average sea surface temperature in December 2025 for Washington was 45.0°F. The maximum and minimum values were 35.8°F and 52.6°F respectively.
Most of the days in December are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in December, in
Precipitation total in December for Washington is 2.1 in. It makes december one of the least rainy months of the year.
The average wind speed in December is 7.4 mph.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Washington in December is 5.2 hours.
Washington on the Weather Map
| Boston |  |
+58 |
| Chicago | |
+62 |
| Hawaii |  |
+82 |
| Houston |  |
+86 |
| Las Vegas |  |
+92 |
| Los Angeles | |
+100 |
| Maui | |
+74 |
| Miami | |
+88 |
| Myrtle Beach | |
+70 |
| New York | |
+62 |
| San Diego | |
+84 |
| San Francisco | |
+66 |
| Santa Monica | |
+94 |
| Sarasota | |
+84 |
| Washington | |
+64 |
| 2100 |  |
64°F | SE 9 mph |
| 0000 | |
58°F | S 7 mph |
| 0300 | |
54°F | S 7 mph |
| 0600 | |
50°F | S 6 mph |
| 0900 |  |
54°F | S 6 mph |
| 1200 | |
64°F | S 6 mph |
| 1500 | |
68°F | SE 4 mph |
| 1800 | |
66°F | E 1 mph |