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Washington D.C. August Weather

Averages and records for weather in Washington D.C., District of Columbia in the month of August.

Typical Washington D.C. August Weather 1991–2020
Average daily high	87.3 °F
Average daily low	70.5 °F
Average monthly precipitation	3.3 inches
Average monthly snow	none

Washington D.C. August Weather Records 1851–2023
Highest temperature	106 °F	August 6, 1918
Lowest temperature	49 °F	August 29, 1986
Highest daily low	84 °F	August 18, 1858
Lowest daily high	61 °F	August 26, 1908
Hottest average temperature	4.1 °F above average	1980
Coldest average temperature	-8.7 °F below average	1927
Most daily precipitation	6.4 inches	August 23, 1933
Most monthly precipitation	14.4 inches	1928
Most daily snow	none	-
Most monthly snow	none	-

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
August 1	88.6	71.8	100	54
August 2	88.5	71.7	100	55
August 3	88.4	71.6	101	56
August 4	88.4	71.6	102	54
August 5	88.2	71.5	102	54
August 6	88.1	71.4	106	53
August 7	88.0	71.2	104	58
August 8	88.0	71.2	102	54
August 9	87.9	71.1	102	57
August 10	87.8	70.9	98	55
August 11	87.7	70.8	101	56
August 12	87.6	70.7	99	55
August 13	87.5	70.7	101	55
August 14	87.5	70.6	100	55
August 15	87.4	70.5	103	51
August 16	87.3	70.5	102	54
August 17	87.2	70.4	105	51
August 18	87.0	70.2	98	54
August 19	86.8	70.1	98	53
August 20	86.7	70.0	101	50
August 21	86.7	70.0	100	53
August 22	86.6	69.9	99	51
August 23	86.4	69.7	98	52
August 24	86.3	69.5	98	49
August 25	86.2	69.4	97	54
August 26	86.0	69.2	97	51
August 27	85.8	69.1	100	51
August 28	85.6	68.8	99	50
August 29	85.3	68.6	98	49
August 30	85.2	68.3	99	50
August 31	85.0	68.2	100	49

Weather Station Details

Years	Station	Coordinates
1945–2023	Washington Reagan Airport	location
1851–1945	Washington D.C.	location