San Francisco Airport, CA: January

31 January 2026: January 2026 averaged 53.3°F in San Francisco Airport, CA, the warmest January since 2024, tied 10th warmest of 81 (with 2021).

January 2026

Mean temperature: 53.3°F; Warmest since 2024; 10th warmest of 81
Precipitation: 3.78 in; Wettest since 2024; 39th wettest of 81

A normal January in San Francisco Airport, CA (1991 to 2020): a mean temperature of 51.1°F, between 48.8°F and 53.8°F in eight years of ten and 2.99 in of precipitation, between 0.24 in and 8.27 in in eight years of ten.

The mean temperature of every January in San Francisco Airport, CA since 1946: 53.3°F in 2026; the highest is 55.1°F, in 2014.

Normal range, 48.8 to 53.8°F

Every year, ranked, as a table

Every January in San Francisco Airport, CA from 1946 to 2026, 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
2026	53.3	10	60	6	46.6	15	3.78	39	0
2025	52.5	15	59.9	8	45.2	25	0.24	77	0
2024	54.1	3	59.5	11	48.7	3	5.04	25	0
2023	53.8	5	59.8	9	47.9	8	9.31	4	0
2022	52.3	19	59.3	13	45.2	25	0.42	74	0
2021	53.3	10	60	6	46.6	15	2.92	49	0
2020	52.1	21	58.3	19	46	20	1.18	65	0
2019	55	2	60.9	3	49.1	1	4.57	29	0
2018	53.5	8	58.8	15	48.1	5	4.85	26	0
2017	50.6	31	56.5	37	44.7	27	9.33	3	0
2016	52.7	14	57	31	48.4	4	5.58	23	0
2015	53.9	4	61	2	46.9	11	0.00	81	0
2014	55.1	1	64.1	1	46.1	19	0.01	80	0
2013	48.6	52	55.6	50	41.7	55	0.20	79	0
2012	50.5	32	58.1	23	43	39	2.16	57	0
2011	50.5	32	56.7	36	44.3	32	0.94	67	0
2010	51.2	27	55.6	50	46.8	13	5.97	20	0
2009	51.3	25	58.7	18	43.9	36	0.69	71	0
2008	48.4	55	53.5	70	43.3	37	7.83	14	0
2007	48	61	55.7	48	40.3	64	0.65	72	0
2006	51.6	23	57.7	27	45.5	23	2.45	55	0
2005	49.6	41	54.9	61	44.4	30	4.27	34	0
2004	50.3	37	55.1	57	45.4	24	3.02	46	0
2003	53.8	5	58.8	15	48.8	2	1.43	60	0
2002	49	48	55	59	43	39	1.38	61	0
2001	48.8	50	55.6	50	41.9	52	3.87	38	0
2000	52.4	17	57.8	25	47	10	5.83	22	0
1999	49.2	44	55.2	56	43.3	37	2.96	48	0
1998	52.8	13	57.6	29	48	7	8.20	13	0
1997	50.9	30	55.8	46	46	20	7.52	15	0
1996	51.8	22	57.8	25	45.8	22	6.92	16	0
1995	52.2	20	56.3	40	48.1	5	8.89	8	0
1994	51.5	24	58.8	15	44.2	33	2.50	54	0
1993	49.2	44	56.2	42	42.3	48	11.26	1	0
1992	48.9	49	55.5	53	42.2	50	2.04	58	0
1991	50.1	38	57.7	27	42.4	47	0.24	77	0
1990	49.9	39	56.8	34	42.9	41	3.06	44	0
1989	48.3	58	55.9	44	40.7	63	1.25	63	0
1988	50.5	32	57	31	44.1	34	3.92	37	0
1987	49.3	43	55.8	46	42.8	42	2.80	50	0
1986	53.7	7	59.6	10	47.8	9	4.04	35	0
1985	46.4	73	53	74	39.7	68	0.74	69	0
1984	51.3	25	58.2	21	44.4	30	0.46	73	0
1983	47.9	62	54.1	66	41.8	53	6.83	17	0
1982	45.1	77	51.8	79	38.3	72	8.81	9	0
1981	51	29	57.4	30	44.7	27	5.92	21	0
1980	50.5	32	57	31	44	35	4.85	26	0
1979	47.5	65	54.1	66	40.8	62	6.61	18	0
1978	52.5	15	58.3	19	46.6	15	8.90	7	0
1977	47	70	53.9	68	40.1	65	2.22	56	0
1976	48.5	53	58.9	14	38.1	76	0.37	75	0
1975	47.4	67	55.9	44	38.8	71	2.60	53	0
1974	48.5	53	55.1	57	42	51	3.21	42	0
1973	47.9	62	54.6	63	41.3	59	8.32	12	0
1972	45.6	75	53	74	38.2	73	1.09	66	0
1971	48.2	59	55	59	41.5	56	1.27	62	0
1970	52.4	17	57.9	24	46.9	11	8.33	11	0
1969	47	70	52.9	76	41.2	60	8.92	6	0
1968	46.5	72	54.7	62	38.2	73	5.25	24	0
1967	49.2	44	56.5	37	41.8	53	10.43	2	0
1966	47.5	65	55.4	54	39.7	68	2.70	51	0
1965	48.4	55	54.6	63	42.3	48	4.37	33	0
1964	48.1	60	56.3	40	40	66	4.38	32	0
1963	45.5	76	53.5	70	37.6	78	4.47	31	0
1962	47.3	68	56.4	39	38.2	73	1.70	59	0
1961	47.6	64	53.9	68	41.4	58	2.63	52	0
1960	49.2	44	55.7	48	42.6	45	4.49	30	0
1959	53.4	9	60.2	5	46.6	15	4.04	35	0
1958	50.4	36	58.2	21	42.5	46	4.65	28	0
1957	46	74	53.1	73	38.9	70	3.36	41	0
1956	49.9	39	55.3	55	44.5	29	8.78	10	0
1955	44.9	78	52.2	78	37.5	79	3.64	40	0
1954	49.5	42	56.2	42	42.7	43	3.07	43	0
1953	53.1	12	59.4	12	46.7	14	3.04	45	0
1952	47.1	69	53.2	72	41	61	8.95	5	0
1951	48.7	51	54.6	63	42.7	43	2.98	47	0
1950	44.9	78	51.8	79	38.1	76	6.28	19	0
1949	42.4	81	50.2	81	34.6	81	1.24	64	0
1948	51.1	28	60.7	4	41.5	56	0.31	76	0
1947	44.7	80	52.8	77	36.6	80	0.73	70	0
1946	48.4	55	56.8	34	39.9	67	0.92	68	1

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2014	55.1
2019	55
2024	54.1
2015	53.9
2023	53.8
2003	53.8
1986	53.7
2018	53.5
1959	53.4
2026	53.3
More years share the last value

Coldest
Year	Mean, °F
1949	42.4
1947	44.7
1955	44.9
1950	44.9
1982	45.1
1963	45.5
1972	45.6
1957	46
1985	46.4
1968	46.5

Wettest
Year	Precipitation, in
1993	11.26
1967	10.43
2017	9.33
2023	9.31
1952	8.95
1969	8.92
1978	8.90
1995	8.89
1982	8.81
1956	8.78

Driest
Year	Precipitation, in
2015	0.00
2014	0.01
2013	0.20
2025	0.24
1991	0.24
1948	0.31
1976	0.37
2022	0.42
1984	0.46
2007	0.65

The hottest, coldest and wettest days

Hottest day: 71°F; 16 January 2026
Coldest night: 40°F; 10 January 2026
Wettest day: 1.32 in; 4 January 2026

Every month, season and year

Months

Seasons

Years

San Francisco Airport, CA the day's answers

All-time records

Every answer in words

January 2026 brought 3.78 in of precipitation in San Francisco Airport, CA, the wettest January since 2024, 39th wettest of 81.
The hottest day of January 2026 in San Francisco Airport, CA: 71°F on Friday 16 January 2026.
The coldest night of January 2026 in San Francisco Airport, CA: a low of 40°F on Saturday 10 January 2026.
The wettest day of January 2026 in San Francisco Airport, CA: 1.32 in on Sunday 4 January 2026.