Bethesda Weather & Climate: Best Time to Visit

Depending on the time of the year, temperatures range from pleasant to chilly in Bethesda. Average maximum daytime temperatures range from a pleasant 20°C (68°F) in July, the warmest time of the year, to a chilly 8°C (46°F) during cooler months like February.

At night, you can expect temperatures ranging from 12°C (54°F) in July to around 3°C (37°F) during February.

Check out our detailed temperature page for more information.

Temperature ranges by month

Bethesda has a relatively rain/snowy climate with high precipitation levels, averaging 1240 mm (49 in) of rain/snowfall annually. Year-round, Bethesda has a balanced climate with minimal variation in precipitation. The difference between the wettest month, December, with 126 mm (5 in), and the driest month, May, with 88 mm (3.5 in), is minimal. For more details, please visit our Bethesda Precipitation page.

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

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Bethesda. While May receives considerable daily sunshine with up to 5.6 hours, December marks the darkest time of the year, where sunshine is scarce with only 0.9 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine