Washington DC Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Washington DC.
Climate overview of Washington DC
In July and August temperatures are on average around 30°C (86°F). From July until December hurricanes sometimes hit the region.
Washington DC Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Washington DC — and find the best time to visit.
Monthly Temperature in Washington DC
The climate in Washington DC is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a very warm 32°C (90°F) in July to a chilly 7°C (45°F) in January.
Nighttime temperatures range from 22°C (72°F) in July to -2°C (28°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Washington DC
Washington DC has a notably wet climate with abundant precipitation, recording 1047 mm (41 in) of rain/snowfall per year. The seasons in Washington DC bring significant changes in precipitation. The wettest month, June, receives high rainfall, with an average of 137 mm (5.4 in) of precipitation. This rainfall is distributed across 12 rainy days.
In contrast, the driest month, January, experiences much less snow/rainfall, totaling 62 mm (2.4 in) over 10 snowy/rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Washington DC Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Washington DC
In Washington DC, summer days are longer and more sunny, with daily sunshine hours peaking at 9.4 hours in June. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.3 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Washington DC by Month
The relative humidity is high throughout the year in Washington DC.
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
Wind Speed in Washington DC
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)
Best Time to Visit Washington DC
Frequently asked questions about the climate in Washington DC
What is the best time to visit Washington DC?
April and September typically offer the most optimal weather in Washington DC. In contrast, January, February and December tend to have less optimal conditions.
What temperatures can I expect in Washington DC?
Daytime highs range from 7°C (45°F) in January to 32°C (90°F) in July. Nighttime lows range from -2°C (28°F) to 22°C (72°F). Temperatures vary considerably through the year.
How much rain does Washington DC get?
Annual rainfall is around 1047 mm (41 in). June is the wettest month with 137 mm (5.4 in), while January is the driest with 62 mm (2.4 in).
How sunny is Washington DC?
Washington DC receives around 2,520 hours of sunshine per year. June is the sunniest month with 282 hours, while December is the cloudiest with just 130 hours. Overall, Washington DC enjoys abundant sunshine.
Washington DC 3-Day Forecast
Washington DC 3-Day Forecast
Washington DC on the map
Washington DC is highlighted — select any city to see its climate.
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