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San Francisco December Weather

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

Typical San Francisco December Weather 1991–2020
Average daily high	58.5 °F
Average daily low	47.2 °F
Average monthly precipitation	4.8 inches
Daily chance of precipitation	37.6%

San Francisco December Weather Records 1921–2024
Highest temperature	76 °F	December 12, 1958
Lowest temperature	27 °F	December 11, 1932
Highest daily low	63 °F	December 10, 1937
Lowest daily high	35 °F	December 11, 1932
Hottest average high temperature	63.8 °F	1958
Coldest average high temperature	51.6 °F	1972
Most daily precipitation	5.5 inches	December 31, 2022
Most monthly precipitation	12.0 inches	2002

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

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
December 1	60.7	49.0	73	42
December 2	60.5	48.8	73	40
December 3	60.3	48.7	73	41
December 4	60.2	48.5	71	40
December 5	60.0	48.4	74	40
December 6	59.8	48.2	73	40
December 7	59.6	48.1	72	38
December 8	59.5	48.0	73	34
December 9	59.3	47.9	71	30
December 10	59.2	47.8	69	32
December 11	59.0	47.6	73	27
December 12	58.9	47.5	76	31
December 13	58.8	47.4	69	35
December 14	58.7	47.3	69	35
December 15	58.6	47.2	71	36
December 16	58.5	47.2	71	37
December 17	58.4	47.1	69	39
December 18	58.3	47.0	67	36
December 19	58.2	47.0	73	37
December 20	58.1	46.9	72	34
December 21	58.1	46.8	70	30
December 22	58.0	46.7	71	28
December 23	57.9	46.6	68	31
December 24	57.8	46.5	67	32
December 25	57.7	46.5	67	35
December 26	57.7	46.4	74	36
December 27	57.6	46.4	71	39
December 28	57.6	46.3	73	39
December 29	57.6	46.3	68	38
December 30	57.7	46.3	68	36
December 31	57.6	46.3	67	36

Weather Station Details

Years	Station	Coordinates
1921–2024	Downtown San Francisco	location