San Francisco Airport, CA

Sunday 4 October 2026: a low of 64°F in San Francisco Airport, CA, tying the record for the warmest 4 October night, set in 2014, in 81 years since 1945 (no value for 1946); matching the National Weather Service report.

Sunday 4 October 2026

High: 83°F; Warmest since 2023; 9th warmest of 81
Low: 64°F; Ties the record; Warmest of 81, confirmed

No measurable precipitation in San Francisco Airport, CA for 31 days to Sunday 4 October 2026.

Every 4 October low in San Francisco Airport, CA since 1945: 64°F in 2026; the lowest is 47°F, in 1989.

Normal range, 51.9 to 60°F

Every year as a table

Every 4 October high in San Francisco Airport, CA since 1945: 83°F in 2026; the highest is 95°F, in 1987.

Year	High, °F	Low, °F
2026	83	64
2025	73	56
2024	82	58
2023	90	61
2022	66	58
2021	79	55
2020	71	55
2019	73	52
2018	71	58
2017	76	52
2016	70	57
2015	73	53
2014	92	64
2013	76	61
2012	72	59
2011	66	57
2010	69	60
2009	62	50
2008	68	59
2007	65	53
2006	64	55
2005	68	51
2004	63	57
2003	66	56
2002	78	53
2001	69	55
2000	67	55
1999	68	55
1998	72	50
1997	73	60
1996	73	55
1995	85	58
1994	69	57
1993	62	55
1992	83	54
1991	70	54
1990	79	59
1989	71	47
1988	72	54
1987	95	54
1986	84	53
1985	93	61
1984	68	56
1983	83	55
1982	66	54
1981	65	51
1980	73	54
1979	66	55
1978	68	50
1977	65	52
1976	78	52
1975	79	51
1974	70	52
1973	78	50
1972	68	55
1971	85	50
1970	61	52
1969	77	53
1968	64	53
1967	71	50
1966	67	52
1965	68	51
1964	73	51
1963	69	57
1962	65	50
1961	64	51
1960	71	54
1959	71	50
1958	66	54
1957	67	55
1956	67	53
1955	67	51
1954	63	51
1953	88	52
1952	63	52
1951	74	48
1950	73	57
1949	63	48
1948	68	56
1947	82	53
1945	70	54

The forecast

Date	High	Low
6 October	86°FRecord 98°F, 2024	61°FRecord 44°F, 1954
7 October	Record 92°F, 1996	Record 45°F, 1970, 1968, 1946

The month and the year

Every year's 1 to 4 October in San Francisco Airport, CA, ranked by its mean temperature: October 2026 so far is the 8th warmest of 80.

Every year, ranked, as a table

Rank	Year	Mean, °F
1	2014	76.9
2	2024	75.1
3	1980	72.9
4	2012	71.6
5	2020	70.5
6	1985	70
7	1995	69.9
8	2026	69.3
9	2021	69.1
10	2023	67.6
11	1990	67.1
12	1986	66.9
13	2018	66.3
14	1978	65.6
15	2025	65.5
15	1964	65.5
17	1987	65.4
18	1997	65.3
19	2008	65.1
19	1983	65.1
19	1979	65.1
22	1959	64.9
23	1992	64.8
24	2015	64.6
24	2010	64.6
26	2022	64.4
27	1991	64.1
27	1969	64.1
27	1958	64.1
30	2017	63.9
31	2013	63.6
31	2002	63.6
33	2001	63.5
34	2011	63.4
35	1977	63.3
36	1952	63.1
37	1951	63
38	1953	62.9
39	1974	62.6
40	1994	62.5
40	1984	62.5
42	1976	62.4
43	1961	62.3
44	1971	62.1
44	1967	62.1
44	1962	62.1
47	2000	62
47	1965	62
47	1957	62
50	1988	61.9
51	1996	61.8
52	2016	61.6
52	1960	61.6
54	2007	61.5
54	1975	61.5
56	2005	61.4
56	1982	61.4
56	1981	61.4
56	1972	61.4
56	1948	61.4
61	2019	61.3
61	1963	61.3
63	2009	61.1
63	1999	61.1
63	1945	61.1
66	1970	61
66	1956	61
68	1973	60.8
69	1966	60.6
69	1949	60.6
71	2003	60.4
72	1998	59.9
72	1989	59.9
74	1950	59.8
75	1968	59.5
76	2004	59.3
77	2006	59
78	1993	58.4
79	1955	57.1
80	1954	55.8

Every day as a table

Daily highs and lows in San Francisco Airport, CA, 1 to 4 October 2026, with each date's record range and its 1991 to 2020 normal range.

Day	High, °F	Low, °F	Record high	Year	Record low	Year	Normal high	Normal low
1 October 2026	73	54	97	1980	42	1950	70	56.5
2 October 2026	76	55	96	1980	41	1950	71	54.5
3 October 2026	90	59	95	2014	42	1954	71	54
4 October 2026	83	64	95	1987	47	1989	70	55

The warmest, coldest and wettest on this date

The 20 warmest 4 October highs in San Francisco Airport, CA since 1945.
Rank	Year	High, °F
1	1987	95
2	1985	93
3	2014	92
4	2023	90
5	1953	88
6	1995	85
6	1971	85
8	1986	84
9	2026	83
9	1992	83
9	1983	83
12	2024	82
12	1947	82
14	2021	79
14	1990	79
14	1975	79
17	2002	78
17	1976	78
17	1973	78
20	1969	77

The 20 coldest 4 October lows in San Francisco Airport, CA since 1945.
Rank	Year	Low, °F
1	1989	47
2	1951	48
2	1949	48
4	2009	50
4	1998	50
4	1978	50
4	1973	50
4	1971	50
4	1967	50
4	1962	50
4	1959	50
12	2005	51
12	1981	51
12	1975	51
12	1965	51
12	1964	51
12	1961	51
12	1955	51
12	1954	51
20	2019	52

The 20 wettest 4 October days in San Francisco Airport, CA since 1945.
Rank	Year	Precipitation, in
1	1994	0.33
2	2011	0.26
3	2006	0.23
4	2008	0.03
5	1993	trace
5	1968	trace
5	1950	trace
5	1948	trace
9	2026	0.00
9	2025	0.00
9	2024	0.00
9	2023	0.00
9	2022	0.00
9	2021	0.00
9	2020	0.00
9	2019	0.00
9	2018	0.00
9	2017	0.00
9	2016	0.00
9	2015	0.00

Every answer in words

Sunday 4 October 2026: a high of 83°F in San Francisco Airport, CA, the warmest 4 October since 2023, tied 9th warmest of 81 (with 1992 and 1983).
Forecast for Tuesday 6 October 2026: a high of 86°F in San Francisco Airport, CA, which would be the warmest 6 October since 2024, 9th warmest of 82 (National Weather Service forecast).
Forecast for Tuesday 6 October 2026: a low of 61°F in San Francisco Airport, CA, which would be the warmest 6 October night since 2024, tied 3rd warmest of 82 (with 2010) (National Weather Service forecast).
San Francisco Airport, CA on 6 October: record high 98°F (2024), record low 44°F (1954).
San Francisco Airport, CA on 7 October: record high 92°F (1996), record low 45°F (1970, 1968 and 1946).
October 2026 so far averaged 69.3°F in San Francisco Airport, CA, the warmest 1 to 4 October since 2024, 8th warmest of 80.
October 2026 so far brought 0.00 in of precipitation in San Francisco Airport, CA, tying the record for the driest 1 to 4 October, set in 2024, 2023, 2022 and 49 other years, in 80 years since 1945 (1946 excluded: 1 of 4 days missing; 1947 excluded: 1 of 4 days missing); provisional.
Fall 2026 so far averaged 66.4°F in San Francisco Airport, CA, the warmest 1 September to 4 October since 2025, tied 14th warmest of 82 (with 2004 and 1990).
Fall 2026 so far brought 0.01 in of precipitation in San Francisco Airport, CA, the driest 1 September to 4 October since 2024, tied 24th driest of 82 (with 2010, 1992 and 1953).
2026 so far averaged 61.1°F in San Francisco Airport, CA, the warmest 1 January to 4 October since 2015, 3rd warmest of 81.
2026 so far brought 10.78 in of precipitation in San Francisco Airport, CA, the driest 1 January to 4 October since 2025, 37th driest of 81.
The 30 days to Sunday 4 October 2026 brought 0.00 in of precipitation in San Francisco Airport, CA, tying the record for the driest 30 days to 4 October, set in 2024, 2021, 2020 and 3 other years, in 82 years since 1945; provisional.
The 60 days to Sunday 4 October 2026 brought 0.04 in of precipitation in San Francisco Airport, CA, the driest 60 days to 4 October since 2021, tied 25th driest of 81 (with 2004 and 1973).
The 90 days to Sunday 4 October 2026 brought 0.04 in of precipitation in San Francisco Airport, CA, the driest 90 days to 4 October since 2021, tied 22nd driest of 81 (with 2004, 1973, 1953 and 1 other year).
San Francisco Airport, CA has had 4 days at 90°F or above in 2026 through 4 October, the most by that date since 2022, tied 26th most of 81 (with 2017, 1997, 1995 and 6 other years).

Nearby

San Jose, CA 30.1 mi
Stockton, CA 65.0 mi
Sacramento, CA 77.4 mi
Merced, CA 103.9 mi
Ukiah, CA 113.6 mi
San Mateo County, CA county average
California every city and county

All-time records

About these figures

Daily records for San Francisco Airport, CA run from 1945 to 4 October 2026, with 63 days missing; current station SAN FRANCISCO INTERNATIONAL AP.

Our calculation from NOAA records for San Francisco Airport, CA, 1945 to 2026. Preliminary until NOAA's final data.