San Francisco Airport, CA: Summer

31 August 2026: Summer 2026 averaged 64°F in San Francisco Airport, CA, the warmest summer since 2023, tied 19th warmest of 79 (with 1988).

Summer 2026

Mean temperature: 64°F; Warmest since 2023; 19th warmest of 79
Precipitation: 0.04 in; Driest since 2025; 33rd driest of 81

A normal summer in San Francisco Airport, CA (1991 to 2020): a mean temperature of 63.3°F, between 62.3°F and 65.6°F in eight years of ten and 0.05 in of precipitation, between 0.00 in and 0.54 in in eight years of ten.

The mean temperature of every summer in San Francisco Airport, CA since 1947: 64°F in 2026; the highest is 66.1°F, in 2019 and 2014.

Normal range, 62.3 to 65.6°F

Every year, ranked, as a table

Every summer in San Francisco Airport, CA from 1945 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	64	19	71.3	37	56.7	10	0.04	47	0
2025	62.7	43	69.7	68	55.7	18	trace	61	0
2024	62.7	43	71	44	54.4	37	0.10	31	0
2023	64.8	9	72.5	17	57.2	6	0.04	47	0
2022	64.9	8	72.8	16	57	7	0.06	38	0
2021	65.2	6	73	15	57.4	3	0.00	80	0
2020	65.1	7	74.2	5	56.1	14	0.05	43	0
2019	66.1	1	75	2	57.3	4	0.00	80	0
2018							trace	61	20
2017	64.4	12	72.3	21	56.6	11	0.05	43	0
2016	63.4	27	71.3	37	55.4	23	trace	61	0
2015	65.8	3	73.5	9	58.2	1	0.26	20	0
2014	66.1	1	74	6	58.2	1	trace	61	0
2013	63.3	28	71	44	55.6	19	0.05	43	0
2012	61.8	58	69.6	69	54.1	43	0.09	35	0
2011	61.8	58	69.4	72	54.2	39	1.49	1	0
2010	63	35	70.4	54	55.5	21	trace	61	0
2009	63.6	24	71.6	32	55.6	19	0.04	47	0
2008	62.9	37	71.3	37	54.5	36	0.01	53	0
2007	63.3	28	71.1	42	55.5	21	0.01	53	0
2006	64.2	17	72.5	17	55.8	17	trace	61	0
2005	63.2	31	71.1	42	55.4	23	0.30	18	0
2004	64.4	12	71.7	29	57	7	trace	61	0
2003	64.1	18	72.1	24	56	15	trace	61	0
2002	63.2	31	71.3	37	55.2	26	trace	61	0
2001	62.8	41	70.5	52	55.1	27	0.10	31	0
2000	62.6	47	70.4	54	54.8	31	0.15	26	0
1999	61.8	58	69.6	69	53.9	48	0.24	21	0
1998	62.9	37	70.7	49	55.1	27	0.03	50	0
1997	64.4	12	72.1	24	56.8	9	0.84	3	0
1996	62.4	50	71.6	32	53.3	58	trace	61	0
1995	62.9	37	71.7	29	54.1	43	0.60	6	0
1994	62.7	43	71.6	32	53.7	50	0.03	50	0
1993	65.5	5	75.1	1	55.9	16	0.16	24	1
1992	64.4	12	72.3	21	56.5	12	0.53	8	0
1991	62.5	49	70.3	59	54.7	33	0.38	10	0
1990	64.4	12	72.5	17	56.2	13	0.01	53	0
1989	63.2	31	72.3	21	54	46	0.01	53	0
1988	64	19	73.2	13	55	30	0.60	6	1
1987	63.5	25	71.8	28	55.3	25	trace	61	0
1986	62	55	70.6	50	53.4	55	0.01	53	0
1985	64.7	10	74.6	3	54.8	31	0.34	17	0
1984	63.8	21	73.9	7	53.6	52	0.14	29	0
1983	64.5	11	73.9	7	55.1	27	0.01	53	0
1982	61.6	63	69.5	71	53.7	50	0.06	38	0
1981	63.2	31	73.4	10	52.9	64	trace	61	0
1980	61.5	66	70	64	52.9	64	0.13	30	0
1979	62.8	41	71.7	29	53.9	48	0.09	35	0
1978	61.7	61	70.1	62	53.2	61	trace	61	0
1977	62.3	52	70.4	54	54.2	39	0.35	15	0
1976	63.3	28	71.9	27	54.7	33	0.67	4	0
1975	61.5	66	70.4	54	52.7	68	0.38	10	0
1974	62.4	50	70.8	46	54	46	0.37	12	0
1973	62	55	71.2	41	52.9	64	trace	61	0
1972	63	35	71.5	35	54.6	35	0.06	38	0
1971	62	55	70.4	54	53.6	52	trace	61	0
1970	61.6	63	70	64	53.3	58	0.36	14	0
1969	62.1	53	70.8	46	53.4	55	0.06	38	0
1968	62.6	47	72	26	53.3	58	0.06	38	0
1967	61.6	63	70.1	62	53.2	61	0.86	2	0
1966	61.4	69	70.3	59	52.4	71	0.16	24	0
1965	60.6	73	68.5	74	52.8	67	0.29	19	0
1964	62.9	37	71.5	35	54.2	39	0.61	5	0
1963	61.5	66	70.5	52	52.4	71	trace	61	0
1962	61.2	70	70.6	50	51.7	74	0.03	50	0
1961	63.7	22	73.2	13	54.2	39	0.15	26	1
1960	62.7	43	72.4	20	53	63	trace	61	1
1959	63.7	22	73.3	12	54.1	43	trace	61	0
1958	65.8	3	74.4	4	57.3	4	0.35	15	0
1957	63.5	25	73.4	10	53.5	54	0.01	53	0
1956	61.7	61	70.8	46	52.7	68	trace	61	0
1955	59.4	79	68.3	76	50.5	79	0.01	53	0
1954	60.6	73	69.9	66	51.2	78	0.17	23	0
1953	60.3	75	68.6	73	51.9	73	0.37	12	0
1952	60.1	76	68.5	74	51.7	74	0.18	22	0
1951	59.6	78	68	78	51.3	77	0.10	31	0
1950	60.9	71	70.3	59	51.4	76	0.07	37	0
1949	59.8	77	67.1	80	52.5	70	0.10	31	0
1948	60.8	72	68.2	77	53.4	55	0.05	43	0
1947	62.1	53	69.9	66	54.4	37	0.48	9	1
1946			67.5	79			0.15	26	10
1945									30

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2019	66.1
2014	66.1
2015	65.8
1958	65.8
1993	65.5
2021	65.2
2020	65.1
2022	64.9
2023	64.8
1985	64.7

Coldest
Year	Mean, °F
1955	59.4
1951	59.6
1949	59.8
1952	60.1
1953	60.3
1965	60.6
1954	60.6
1948	60.8
1950	60.9
1962	61.2

Wettest
Year	Precipitation, in
2011	1.49
1967	0.86
1997	0.84
1976	0.67
1964	0.61
1995	0.60
1988	0.60
1992	0.53
1947	0.48
1991	0.38
More years share the last value

Driest
Year	Precipitation, in
2021	0.00
2019	0.00
2025	trace
2018	trace
2016	trace
2014	trace
2010	trace
2006	trace
2004	trace
2003	trace
More years share the last value

The hottest, coldest and wettest days

Hottest day: 92°F; 21 July 2026
Coldest night: 51°F; 7 June 2026
Wettest day: 0.02 in; 14 August 2026

Every month, season and year

Months

Seasons

Years

San Francisco Airport, CA the day's answers

All-time records

Every answer in words

Summer 2026 brought 0.04 in of precipitation in San Francisco Airport, CA, the driest summer since 2025, tied 33rd driest of 81 (with 2023 and 2009).
The hottest day of summer 2026 in San Francisco Airport, CA: 92°F on Tuesday 21 July 2026.
The coldest night of summer 2026 in San Francisco Airport, CA: a low of 51°F on Sunday 7 June 2026.
The wettest day of summer 2026 in San Francisco Airport, CA: 0.02 in on Friday 14 August 2026.