Weather on December 31
San Francisco, CA
55 Years of Data
About This Date
December 31st in San Francisco, CA typically brings cool winter weather, with average highs around 56°F and lows near 46°F. Over 55 years of records, the warmest December 31st was in 1996 (63°F average), while the coldest was 2010 (45°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 22% of December 31st dates historically, with the wettest December 31st recording 13.87" of rain. The last decade has been 2.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.4°F cooler on this date compared to 20-30 years ago.
Planning for December 31st in San Francisco, CA? Bring layers as temperatures can vary throughout the day.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 53° | 49° | 51° | — | — |
| 2024 | 58° | 45° | 51° | — | — |
| 2023 | 57° | 49° | 53° | — | — |
| 2022 | 61° | 51° | 56° | 13.87" | — |
| 2021 | 53° | 42° | 48° | — | — |
| 2020 | 57° | 48° | 53° | 0.05" | — |
| 2019 | 63° | 46° | 54° | — | — |
| 2018 | 56° | 47° | 51° | — | — |
| 2017 | 59° | 48° | 54° | — | — |
| 2016 | 52° | 45° | 48° | — | — |
| 2015 | 51° | 42° | 47° | — | — |
| 2014 | 57° | 45° | 51° | — | — |
| 2013 | 59° | 46° | 53° | — | — |
| 2012 | 52° | 42° | 47° | — | — |
| 2011 | 59° | 46° | 53° | — | — |
| 2010coldest | 49° | 42° | 45° | — | — |
| 2009 | 59° | 49° | 54° | — | — |
| 2008 | 58° | 43° | 50° | — | — |
| 2007 | 56° | 41° | 48° | — | — |
| 2006 | 52° | 46° | 49° | — | — |
| 2005 | 63° | 51° | 57° | 5.38" | — |
| 2004 | 56° | 46° | 51° | 1.07" | — |
| 2003 | 54° | 46° | 50° | — | — |
| 2002 | 58° | 48° | 53° | 1.68" | — |
| 2001 | 61° | 53° | 57° | 0.08" | — |
| 2000 | 64° | 44° | 54° | — | — |
| 1999 | 53° | 45° | 49° | — | — |
| 1998 | 58° | 49° | 53° | — | — |
| 1997 | 63° | 50° | 56° | — | — |
| 1996warmest | 66° | 59° | 63° | 0.33" | — |
| 1995 | 64° | 55° | 60° | — | — |
| 1994 | 50° | 45° | 47° | 0.76" | — |
| 1993 | 58° | 47° | 52° | — | — |
| 1992 | 57° | 48° | 53° | 0.1" | — |
| 1991 | 62° | 46° | 54° | — | — |
| 1990 | 58° | 36° | 47° | — | — |
| 1989 | 56° | 47° | 51° | — | — |
| 1988 | 52° | 41° | 46° | — | — |
| 1987 | 52° | 40° | 46° | — | — |
| 1986 | 50° | 47° | 48° | 0.36" | — |
| 1985 | 59° | 52° | 55° | — | — |
| 1984 | 53° | 44° | 49° | — | — |
| 1983 | 61° | 48° | 54° | — | — |
| 1982 | 52° | 42° | 47° | — | — |
| 1981 | 52° | 48° | 50° | — | — |
| 1980 | 51° | 44° | 48° | — | — |
| 1979 | 62° | 56° | 59° | 0.05" | — |
| 1978 | 56° | 41° | 48° | — | — |
| 1977 | 55° | 47° | 51° | — | — |
| 1976 | 57° | 48° | 53° | — | — |
| 1975 | 52° | 45° | 48° | — | — |
| 1974 | 57° | 47° | 52° | — | — |
| 1973 | 51° | 44° | 48° | 0.66" | — |
| 1972 | 59° | 44° | 52° | — | — |
| 1971 | 54° | 42° | 48° | — | — |
San Francisco, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
San Francisco, CA Monthly Precipitation
Average rainfall per month, in inches.
San Francisco, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit San Francisco, CA
Most pleasant months in San Francisco, CA: July, August.