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San Rafael May Weather

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

Typical San Rafael May Weather 1991–2020
Average daily high	71.4 °F
Average daily low	50.2 °F
Average monthly precipitation	0.8 inches
Average monthly snow	none
Daily chance of precipitation	9.9%
Daily chance of snow	0%

San Rafael May Weather Records 1894–2024
Highest temperature	100 °F	May 13, 1976
Lowest temperature	27 °F	May 7, 1993
Highest daily low	77 °F	May 15, 2008
Lowest daily high	51 °F	May 29, 1999
Hottest average high temperature	80.3 °F	2001
Coldest average high temperature	64.5 °F	1998
Most daily precipitation	2.0 inches	May 18, 1957
Most monthly precipitation	5.5 inches	1957
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
May 1	69.7	48.9	91	38
May 2	69.9	49.0	91	38
May 3	70.0	49.1	92	37
May 4	70.2	49.2	91	31
May 5	70.3	49.3	90	40
May 6	70.4	49.4	96	41
May 7	70.5	49.5	95	27
May 8	70.7	49.6	96	37
May 9	70.9	49.7	90	41
May 10	71.0	49.8	90	40
May 11	71.1	49.9	89	41
May 12	71.1	49.9	100	38
May 13	71.1	50.0	100	40
May 14	71.2	50.1	94	41
May 15	71.2	50.1	97	39
May 16	71.2	50.2	99	40
May 17	71.4	50.2	98	35
May 18	71.6	50.3	93	40
May 19	71.7	50.3	95	37
May 20	71.9	50.4	96	35
May 21	72.0	50.5	98	40
May 22	72.1	50.6	95	31
May 23	72.2	50.7	93	40
May 24	72.3	50.8	92	36
May 25	72.5	50.9	97	37
May 26	72.6	51.1	98	41
May 27	72.7	51.3	98	40
May 28	72.8	51.4	96	35
May 29	73.0	51.5	100	35
May 30	73.2	51.6	99	36
May 31	73.4	51.7	97	33

Weather Station Details

Years	Station	Coordinates
1894–2024	San Rafael Civic Center	location