The highest day temperature in January 2025 was 50°F. The lowest night temperature was 9°F. The average values for day and night temperatures during January were 33.2°F и 23.9°F respectivly.

The average sea surface temperature in January 2025 for Washington was 34.1°F. The maximum and minimum values were 30.2°F and 43.6°F respectively.

Most of the days in January are sunny but you can also expect cloudy and gloomy days.

Precipitation total in January for Washington is 1.9 in. It makes january one of the least rainy months of the year.

The average wind speed in January is 8.3 mph. It makes January one of the most windy months of the year for Washington.

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 January is 5.5 hours.