San Francisco Airport, CA: December

31 December 2025: December 2025 averaged 52.5°F in San Francisco Airport, CA, the warmest December since 2024, tied 13th warmest of 81 (with 2018 and 2002).

December 2025

Mean temperature: 52.5°F; Warmest since 2024; 13th warmest of 81
Precipitation: 4.39 in; Wettest since 2024; 28th wettest of 81

A normal December in San Francisco Airport, CA (1991 to 2020): a mean temperature of 51.4°F, between 49.2°F and 53.5°F in eight years of ten and 3.37 in of precipitation, between 0.42 in and 8.62 in in eight years of ten.

The mean temperature of every December in San Francisco Airport, CA since 1945: 52.5°F in 2025; the highest is 56.8°F, in 2014.

Normal range, 49.2 to 53.5°F

Every year, ranked, as a table

Every December in San Francisco Airport, CA from 1945 to 2025, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2025	52.5	13	57.2	34	47.9	9	4.39	28	0
2024	54.6	4	60.6	5	48.6	4	4.51	25	0
2023	55.9	2	61.9	2	50	2	3.91	35	0
2022	50.4	38	56.2	45	44.6	30	9.66	5	0
2021	50.9	31	55.8	51	46.1	23	9.81	4	0
2020	53.3	10	61.1	4	45.4	25	1.39	68	0
2019	53.5	9	58.8	15	48.1	7	3.71	38	0
2018	52.5	13	58.4	19	46.6	17	1.65	66	0
2017	51.9	21	59.5	9	44.3	33	0.07	80	0
2016	50.7	35	56.8	39	44.5	32	4.63	23	0
2015	50.5	37	55.8	51	45.2	26	3.37	44	0
2014	56.8	1	61.9	2	51.7	1	10.66	3	0
2013	49.7	47	58.2	22	41.3	63	0.35	77	0
2012	51.8	22	57.4	31	46.3	20	6.24	15	0
2011	49.3	52	56.7	42	41.8	59	0.13	79	0
2010	52.1	19	56.8	39	47.4	12	6.00	19	0
2009	49.2	54	54.5	65	43.9	36	3.07	46	0
2008	48.9	56	54.5	65	43.2	44	2.36	53	0
2007	49.5	51	55.5	56	43.5	38	2.65	50	0
2006	50.3	42	57.2	34	43.4	42	3.37	44	0
2005	53	12	58.5	17	47.6	10	9.34	6	0
2004	52.2	17	58.1	24	46.2	22	6.42	12	0
2003	52	20	57.1	36	46.9	16	6.41	13	0
2002	52.5	13	57.9	28	47.2	14	10.75	2	0
2001	51.6	24	56.1	48	47.2	14	8.54	8	0
2000	51.6	24	58	26	45.2	26	0.44	74	0
1999	51.1	28	59.3	10	42.9	48	0.43	75	0
1998	47	74	53.3	75	40.6	69	1.39	68	0
1997	51.1	28	57.6	30	44.6	30	3.87	37	0
1996	53.9	5	59.2	11	48.6	4	6.97	10	0
1995	53.6	7	59.2	11	48.1	7	6.41	13	0
1994	48	65	53.3	75	42.6	51	2.49	51	0
1993	50.1	44	56.6	43	43.6	37	2.19	56	0
1992	49.7	47	56	49	43.5	38	6.04	18	0
1991	50.8	32	58.3	20	43.3	43	2.70	48	0
1990	46.4	75	54.3	68	38.5	78	1.79	60	0
1989	50	45	57.9	28	42.2	55	0.01	81	0
1988	50.4	38	58.3	20	42.5	53	3.65	40	0
1987	50.4	38	55.8	51	45.1	28	4.51	25	0
1986	50.3	42	57.1	36	43.5	38	1.66	65	0
1985	47.1	73	53.4	73	40.8	68	1.61	67	0
1984	47.7	68	53.8	72	41.6	62	1.89	58	0
1983	53.3	10	58	26	48.7	3	6.23	16	0
1982	48.9	56	55	61	42.7	49	3.99	33	0
1981	52.2	17	56.8	39	47.6	10	3.91	35	0
1980	50.7	35	58.7	16	42.7	49	1.73	62	0
1979	50.8	32	59.1	13	42.6	51	4.30	29	0
1978	46	78	54	70	38	81	0.64	71	0
1977	52.3	16	58.1	24	46.5	18	3.69	39	0
1976	48.8	58	58.9	14	38.7	77	2.70	48	0
1975	49.3	52	57.3	33	41.3	63	0.21	78	0
1974	48.6	63	55.4	58	41.8	59	2.36	53	0
1973	50	45	55.8	51	44.1	35	3.55	41	0
1972	44.9	80	51.6	79	38.2	79	2.40	52	0
1971	46.1	77	52.9	78	39.3	74	3.44	43	0
1970	48.7	59	54.3	68	43.1	45	6.21	17	0
1969	53.7	6	60	8	47.4	12	4.59	24	0
1968	47.8	67	54.4	67	41.1	67	4.49	27	0
1967	48	65	56.3	44	39.8	73	3.50	42	0
1966	49	55	54.8	62	43.1	45	3.96	34	0
1965	44.9	80	51.5	81	38.2	79	5.02	21	0
1964	51.2	26	56.2	45	46.3	20	5.42	20	0
1963	46.2	76	53.3	75	39.2	75	0.55	72	0
1962	49.6	49	55.7	55	43.5	38	2.97	47	0
1961	47.3	72	53.4	73	41.2	66	1.82	59	0
1960	48.7	59	55.5	56	42	57	1.16	70	0
1959	51.2	26	60.4	6	42	57	1.97	57	0
1958	55.2	3	64.6	1	45.7	24	1.77	61	0
1957	49.6	49	56.2	45	43	47	4.18	31	0
1956	48.7	59	58.2	22	39.2	75	0.48	73	0
1955	51.7	23	56.9	38	46.5	18	12.30	1	0
1954	47.6	70	54	70	41.3	63	4.24	30	0
1953	51.1	28	60.3	7	41.8	59	0.41	76	0
1952	50.4	38	55.9	50	44.9	29	9.34	6	0
1951	48.5	64	54.8	62	42.2	55	7.05	9	0
1950	53.6	7	58.5	17	48.6	4	4.77	22	0
1949	47.7	68	55.1	59	40.4	71	2.36	53	0
1948	45.7	79	51.6	79	39.9	72	4.07	32	0
1947	47.6	70	54.8	62	40.5	70	1.67	63	2
1946	48.7	59	55.1	59	42.3	54	1.67	63	1
1945	50.8	32	57.4	31	44.2	34	6.61	11	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2014	56.8
2023	55.9
1958	55.2
2024	54.6
1996	53.9
1969	53.7
1995	53.6
1950	53.6
2019	53.5
2020	53.3
More years share the last value

Coldest
Year	Mean, °F
1972	44.9
1965	44.9
1948	45.7
1978	46
1971	46.1
1963	46.2
1990	46.4
1998	47
1985	47.1
1961	47.3

Wettest
Year	Precipitation, in
1955	12.30
2002	10.75
2014	10.66
2021	9.81
2022	9.66
2005	9.34
1952	9.34
2001	8.54
1951	7.05
1996	6.97

Driest
Year	Precipitation, in
1989	0.01
2017	0.07
2011	0.13
1975	0.21
2013	0.35
1953	0.41
1999	0.43
2000	0.44
1956	0.48
1963	0.55

The hottest, coldest and wettest days

Hottest day: 65°F; 22 December 2025
Coldest night: 43°F; 28 December 2025, 13 December 2025, 5 December 2025
Wettest day: 1.00 in; 25 December 2025

Every month, season and year

Months

Seasons

Years

San Francisco Airport, CA the day's answers

All-time records

Every answer in words

December 2025 brought 4.39 in of precipitation in San Francisco Airport, CA, the wettest December since 2024, 28th wettest of 81.
The hottest day of December 2025 in San Francisco Airport, CA: 65°F on Monday 22 December 2025.
The coldest night of December 2025 in San Francisco Airport, CA: a low of 43°F on Sunday 28 December 2025, Saturday 13 December 2025 and Friday 5 December 2025.
The wettest day of December 2025 in San Francisco Airport, CA: 1.00 in on Thursday 25 December 2025.