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San Francisco August Weather

Averages and records for weather in San Francisco, California in the month of August.

Typical San Francisco August Weather 1991–2020
Average daily high	68.6 °F
Average daily low	55.8 °F
Average monthly precipitation	0.1 inches
Daily chance of precipitation	3.7%

San Francisco August Weather Records 1921–2024
Highest temperature	98 °F	August 24, 2010
Lowest temperature	48 °F	August 14, 1969
Highest daily low	66 °F	August 1, 1993
Lowest daily high	54 °F	August 12, 1954
Hottest average high temperature	74.2 °F	1993
Coldest average high temperature	61.8 °F	1973
Most daily precipitation	0.5 inches	August 19, 1997
Most monthly precipitation	0.8 inches	1976

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	67.6	55.4	88	48
August 2	67.7	55.4	88	50
August 3	67.7	55.4	86	50
August 4	67.7	55.4	83	50
August 5	67.7	55.4	83	50
August 6	67.7	55.4	87	49
August 7	67.6	55.4	92	50
August 8	67.7	55.4	89	50
August 9	67.8	55.5	86	49
August 10	67.8	55.5	86	50
August 11	67.9	55.6	85	50
August 12	68.0	55.6	85	50
August 13	68.2	55.6	90	50
August 14	68.4	55.7	86	48
August 15	68.5	55.7	87	49
August 16	68.6	55.7	90	49
August 17	68.7	55.8	83	50
August 18	68.8	55.8	88	49
August 19	69.0	55.9	91	48
August 20	69.1	55.9	83	49
August 21	69.1	55.9	82	50
August 22	69.3	55.9	84	50
August 23	69.5	56.0	89	51
August 24	69.6	56.0	98	51
August 25	69.6	56.0	93	50
August 26	69.6	56.0	91	50
August 27	69.7	56.0	95	49
August 28	69.7	56.0	96	49
August 29	69.7	56.0	96	48
August 30	69.8	56.0	87	50
August 31	69.6	56.1	87	51

Weather Station Details

Years	Station	Coordinates
1921–2024	Downtown San Francisco	location