As of 20:10 PDT

San Francisco, CA weather in September

57°

San Francisco, Saturday, 8 August, 20:10

Mostly clear. Feels like 56°. High 85°, low 57°.

Pressure29.88 inHg

Wind9 mph SW

Humidity79%

Visibility6.2 mi

Dew point53°

See detailed hourly forecast

In September, San Francisco, CA averages a high of 70.5° and a low of 54.3°. About 0.2 inches of precipitation fall over the month (1 wet days). The record high is 99.5° (2017) and the record low 46.6° (1974). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	71.6°	54.9°	2%	94.6° (2017)	49.3° (1999)
2	71.6°	54.9°	0%	99.5° (2017)	49.5° (1964)
3	70.9°	54.7°	0%	87.6° (1961)	49.5° (1973)
4	70.7°	54.5°	0%	85.8° (1961)	50.2° (1999)
5	71.4°	54.5°	0%	87.1° (2004)	49.6° (1969)
6	71.8°	54.5°	0%	98.2° (2022)	49.3° (1996)
7	72.3°	54.9°	0%	85.5° (2004)	49.6° (1960)
8	71.1°	54.9°	2%	90.5° (1984)	50.2° (2011)
9	69.4°	54.7°	5%	87.3° (1976)	49.5° (1965)
10	70.2°	54.1°	3%	85.6° (1979)	48.9° (2005)
11	71.1°	54.5°	0%	91.2° (1979)	50° (1988)
12	69.8°	54.1°	2%	90.1° (1979)	50.2° (1965)
13	69.4°	54.3°	2%	92.1° (1971)	48.2° (1970)
14	68°	54.1°	2%	95.9° (1971)	49.1° (1970)
15	68.2°	53.8°	0%	90.5° (1971)	47.3° (1970)
16	68.7°	54°	8%	89.1° (1968)	49.1° (2006)
17	69.4°	54.5°	3%	89.6° (1984)	48.7° (2012)
18	70°	54.9°	5%	90.9° (2000)	49.5° (2008)
19	70.5°	54.1°	7%	85.3° (1964)	47.8° (2008)
20	71.1°	54.3°	3%	89.2° (1983)	47.8° (2004)
21	71.1°	53.8°	7%	86.9° (2003)	48.7° (1968)
22	69.8°	53.8°	2%	85.5° (1964)	48.4° (2005)
23	71.1°	53.4°	2%	90.3° (2024)	47.7° (1981)
24	71.1°	54.1°	5%	89.4° (1978)	48.4° (1988)
25	71.2°	54.5°	7%	91.9° (2019)	48° (1972)
26	70.7°	54.1°	0%	88.2° (1963)	48.2° (1988)
27	71.1°	54.3°	5%	86.7° (1973)	48.4° (1986)
28	70.9°	54°	5%	92.5° (2020)	48.4° (1986)
29	70.2°	54°	2%	86.5° (1999)	46.6° (1974)
30	70.2°	54°	7%	87.3° (1980)	48.4° (2009)