December 1940
San Francisco, CA
Average Temp
55.4°F
Record High
71.1°F
Record Low
42.1°F
Days Recorded
31 / 31
Historical December Records
Warmest December
1958 - 57.5°F
Coldest December
1972 - 47.2°F
Daily Temperature Range
High
Low
Average
Click any day to view hourly details
Daily Details
Data source: NOAA