Historical Weather in San Francisco, CA
See 55+ years of weather history for any date in San Francisco going back to 1970.
Part of California weather history
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Today in San Francisco Weather HistorySee records, averages, and 55+ years of data for today's date
→Monthly Climate Averages
Historical temperature and precipitation averages for San Francisco, CA, based on 55+ years of weather data.
Warmest MonthOctoberAvg High: 69°F / Low: 54°F
Coldest MonthDecemberAvg High: 58°F / Low: 46°F
Jan
58°/ 46°
💧 9.8"
Feb
60°/ 47°
💧 9.4"
Mar
62°/ 48°
💧 7.9"
Apr
63°/ 49°
💧 5.4"
May
64°/ 51°
💧 4.2"
Jun
66°/ 53°
💧 3.5"
Jul
66°/ 54°
💧 1.6"
Aug
67°/ 56°
💧 1.8"
Sep
69°/ 56°
💧 3.2"
Oct
69°/ 54°
💧 7.2"
Nov
63°/ 50°
💧 9.0"
Dec
58°/ 46°
💧 9.4"
Temperatures in Fahrenheit. Precipitation and snowfall in inches.
San Francisco Temperature Records
- Record High: The hottest temperature ever recorded in San Francisco, CA is 109°F, set on September 14, 1971.
- Record Low: The coldest temperature ever recorded in San Francisco, CA is 23°F, set on December 6, 2017.
- Data Coverage: Based on 57 years of data from NOAA weather station: SAN FRANCISCO DWTN.
All-Time Record High
109°F
September 14, 1971
All-Time Record Low
23°F
December 6, 2017
Monthly Temperature Records in San Francisco
| Month | Record High | Record Low |
|---|---|---|
| January | 79°F(2021) | 27°F(1982) |
| February | 82°F(2016) | 29°F(1976) |
| March | 88°F(2005) | 25°F(2023) |
| April | 97°F(1981) | 27°F(2018) |
| May | 105°F(1976) | 35°F(2017) |
| June | 107°F(1973) | 37°F(2011) |
| July | 103°F(1972) | 40°F(2021) |
| August | 103°F(2010) | 40°F(2018) |
| September | 109°F(1971) | 38°F(2021) |
| October | 103°F(1980) | 35°F(2020) |
| November | 90°F(2019) | 26°F(1982) |
| December | 76°F(1979) | 23°F(2017) |
San Francisco Snow RecordsSee the top 10 snowiest days ever recorded
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