Arlington (VA) Weather & Climate: Best Time to Visit

In Arlington, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a very warm 31°C (88°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 6°C (43°F).

At night, temperatures range from around 21°C (70°F) in July to -3°C (27°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Arlington experiences significant rain/snowfall throughout the year, averaging 1144 mm (45 in) of precipitation annually. Arlington experiences moderate seasonal variation in rainfall, with monthly averages ranging from 141 mm (5.6 in) in June, the wettest month, and 67 mm (2.6 in) in February, the driest month. For more details, please visit our Arlington Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Arlington can be enjoyed more throughout the sunniest month of June under a blue sky, with approximately 9.4 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 4.3 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Arlington.

The city experiences its highest humidity in August, reaching 69%. In March, the humidity drops to its lowest level at 58%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

The mean wind speed over the year ranges from 4 m/s (8 knots) in May, June, July, August, September, October, November and December to 5 m/s (10 knots) in January, February, March and April. What does this mean?

The mean monthly wind speed over the year (meters per second)