< Previous Month Next Month >

San Rafael August Weather

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

Typical San Rafael August Weather 1991–2020
Average daily high	80.6 °F
Average daily low	55.2 °F
Average monthly precipitation	0.1 inches
Average monthly snow	none
Daily chance of precipitation	0.39%
Daily chance of snow	0%

San Rafael August Weather Records 1894–2024
Highest temperature	105 °F	August 3, 1998
Lowest temperature	40 °F	August 27, 1992
Highest daily low	68 °F	August 29, 1977
Lowest daily high	61 °F	August 5, 2007
Hottest average high temperature	86.9 °F	1969
Coldest average high temperature	76.2 °F	2010
Most daily precipitation	0.8 inches	August 11, 1965
Most monthly precipitation	1.1 inches	1997
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	80.7	55.2	101	45
August 2	80.7	55.2	99	46
August 3	80.7	55.2	105	44
August 4	80.7	55.1	104	43
August 5	80.6	55.1	98	47
August 6	80.5	55.1	99	41
August 7	80.5	55.0	97	47
August 8	80.4	55.0	99	43
August 9	80.4	55.0	99	47
August 10	80.4	55.0	98	48
August 11	80.3	55.0	97	44
August 12	80.3	55.0	99	45
August 13	80.5	55.0	98	46
August 14	80.6	55.1	93	47
August 15	80.6	55.1	98	46
August 16	80.4	55.2	101	47
August 17	80.3	55.2	94	48
August 18	80.4	55.2	95	47
August 19	80.6	55.2	96	46
August 20	80.8	55.2	95	46
August 21	80.8	55.2	93	46
August 22	80.9	55.2	96	45
August 23	80.9	55.2	97	46
August 24	80.9	55.1	102	45
August 25	80.8	55.0	100	45
August 26	80.6	55.0	99	45
August 27	80.5	55.0	100	40
August 28	80.5	55.0	101	45
August 29	80.4	55.0	99	45
August 30	80.3	54.9	100	45
August 31	80.1	54.9	93	46

Weather Station Details

Years	Station	Coordinates
1894–2024	San Rafael Civic Center	location