Washington, DC Climate in May

Temperature for May

In Washington, DC during May the average high temperature is 77.2°F. The hottest day on record was May 29, 1941 when the temperature hit 98.2°F.

Washington, DC daily average and extreme temperature range for May

Low Temperature

During May the overnight temperature drops to an average of 56.5°F, with the lowest temperature of 35.4°F being recorded on May 9, 1947. In May it has never frozen overnight.

Precipitation for May

In May the average monthly rainfall in Washington, DC is 2.25 inches with rain usually falling on between 13 and 14 days. 1938 was the driest May with only 0.00 inches of rain falling, and 1973 was the wettest May with 11.35 inches of rain. The wettest single day in May was 8 May 1973 when 7.87 inches of rain fell.

In May it usually snows on between 0 and 1 days. There are thunderstorms on between 4 and 5 days in May.