Washington, DC Climate

Summary Graph

The summary climate graph for Washington, DC shows a selection of temperature, rainfall and snow minimum, mean and maximum measures over the course of a year. Click on each of the measures in the key to toggle them on and off.

Graph of average and extreme temperature ranges by day for Washington, DC.


The warmest month in Ronald Reagan Washington National, Washington, District of Columbia is July with an average high temperature of 88.9°F. The hottest day on record was August 27 1948 when the temperature hit 105.3°F. During January the overnight temperature drops to an average of 28.9°F with the lowest temperature of -5.1°F being recorded on January 18 1982.

Warmest Days

Warmest Months

Coldest Days

Coldest Months

The warmest days on record are:

27 Aug 1948105.3°F
8 Jul 2012105.1°F
17 Jul 1988104°F
30 Jul 2011104°F
29 Jun 2012104°F

The warmest months on average were:

July 201195.2°F
July 201294.9°F
July 201093.8°F
July 198793.5°F
August 198093.5°F

The coldest days on record are:

18 Jan 1982-5.1°F
22 Jan 1985-4°F
20 Jan 1994-4°F
29 Jan 19401.4°F
21 Dec 19421.9°F

The coldest months on average were:

January 197716.3°F
January 194017.6°F
January 198218°F
January 199418.9°F
December 198919.3°F


The wettest month by average rainfall in Washington, DC is July with an average of 2.3 inches of rain falling on 11 to 12 days.Although in May it typically rains on more days with 2.3 inches falling in 13 to 14 days. The driest month in Washington, DC is February with an average of 1.3 inches of rain falling on 8 to 9 days.

Wettest Days

The wettest days on record are:

5 December 19932.5 inches
18 December 19772.2 inches
8 December 20112.2 inches
2 December 19741.9 inches
25 December 19861.9 inches

Wettest Months

The wettest months on record are:

January 197316.2 inches
July 197414.9 inches
June 200614 inches
May 197311.4 inches
September 197510.3 inches

Driest Months

The driest months on record are:

October 19360 inches
November 19360 inches
December 19360 inches
January 19370 inches
February 19370 inches