Weather on December 17
San Francisco, CA
55 Years of Data
Avg High
59°F
Avg Low
47°F
Warmest
1998
61°F avg
Coldest
2005
46°F avg
About This Date
December 17th in San Francisco, CA typically brings cool winter weather, with average highs around 59°F and lows near 47°F. Over 55 years of records, the warmest December 17th was in 1998 (61°F average), while the coldest was 2005 (46°F) — a 15°F range across recorded history. Rain or other precipitation has occurred on about 35% of December 17th dates historically, with the wettest December 17th recording 2.9" of rain. The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
Planning for December 17th in San Francisco, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 61° | 51° | 56° | 0.58" | — |
| 2024 | 55° | 48° | 52° | — | — |
| 2023 | 57° | 53° | 55° | 0.18" | — |
| 2022 | 56° | 43° | 49° | — | — |
| 2021 | 54° | 44° | 49° | — | — |
| 2020 | 56° | 49° | 52° | 0.99" | — |
| 2019 | 57° | 47° | 52° | — | — |
| 2018 | 60° | 51° | 56° | 0.03" | — |
| 2017 | 63° | 52° | 57° | — | — |
| 2016 | 51° | 41° | 46° | — | — |
| 2015 | 57° | 45° | 51° | — | — |
| 2014 | 58° | 50° | 54° | 0.69" | — |
| 2013 | 64° | 51° | 58° | — | — |
| 2012 | 57° | 48° | 53° | 0.46" | — |
| 2011 | 59° | 46° | 53° | — | — |
| 2010 | 56° | 46° | 51° | 2.08" | — |
| 2009 | 60° | 50° | 55° | — | — |
| 2008 | 52° | 40° | 46° | — | — |
| 2007 | 55° | 49° | 52° | 0.43" | — |
| 2006 | 53° | 42° | 48° | — | — |
| 2005coldest | 50° | 42° | 46° | 2.9" | — |
| 2004 | 67° | 47° | 57° | — | — |
| 2003 | 61° | 46° | 53° | — | — |
| 2002 | 55° | 45° | 50° | 1.93" | — |
| 2001 | 61° | 46° | 53° | 1.55" | — |
| 2000 | 64° | 46° | 55° | — | — |
| 1999 | 65° | 46° | 55° | — | — |
| 1998warmest | 69° | 53° | 61° | — | — |
| 1997 | 60° | 50° | 55° | 0.03" | — |
| 1996 | 69° | 46° | 58° | — | — |
| 1995 | 60° | 45° | 52° | — | — |
| 1994 | 54° | 45° | 49° | 0.03" | — |
| 1993 | 52° | 42° | 47° | — | — |
| 1992 | 55° | 44° | 50° | 0.79" | — |
| 1991 | 57° | 44° | 51° | 0.25" | — |
| 1990 | 63° | 43° | 53° | — | — |
| 1989 | 53° | 44° | 49° | — | — |
| 1988 | 60° | 48° | 54° | — | — |
| 1987 | 60° | 45° | 52° | — | — |
| 1986 | 66° | 46° | 56° | — | — |
| 1985 | 66° | 44° | 55° | — | — |
| 1984 | 53° | 41° | 47° | — | — |
| 1983 | 60° | 50° | 55° | — | — |
| 1982 | 59° | 51° | 55° | 0.03" | — |
| 1981 | 56° | 49° | 52° | — | — |
| 1980 | 67° | 52° | 59° | — | — |
| 1979 | 60° | 51° | 56° | — | — |
| 1978 | 53° | 48° | 51° | — | — |
| 1977 | 60° | 49° | 54° | 2.41" | — |
| 1976 | 62° | 49° | 55° | — | — |
| 1975 | 62° | 48° | 55° | — | — |
| 1974 | 63° | 46° | 54° | — | — |
| 1973 | 57° | 51° | 54° | 0.38" | — |
| 1972 | 51° | 43° | 47° | 2.84" | — |
| 1971 | 57° | 42° | 50° | — | — |
55 years of data from SAN FRANCISCO DWTN