Weather on December 15
Santa Rosa, CA
55 Years of Data
About This Date
December 15th in Santa Rosa, CA typically brings cool winter weather, with average highs around 57°F and lows near 38°F. Over 55 years of records, the warmest December 15th was in 1981 (58°F average), while the coldest was 1972 (33°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 33% of December 15th dates historically, with the wettest December 15th recording 3.35" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for December 15th in Santa Rosa, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 55° | 39° | 47° | — | — |
| 2024 | 56° | 38° | 47° | — | — |
| 2023 | 60° | 36° | 48° | — | — |
| 2022 | 54° | 29° | 41° | — | — |
| 2021 | 50° | 38° | 44° | — | — |
| 2020 | 59° | 37° | 48° | — | — |
| 2019 | 57° | 36° | 46° | — | — |
| 2018 | 59° | 51° | 55° | 0.46" | — |
| 2017 | 60° | 35° | 48° | — | — |
| 2016 | 56° | 48° | 52° | — | — |
| 2015 | 58° | 39° | 48° | — | — |
| 2014 | 50° | 47° | 48° | — | — |
| 2013 | 63° | 41° | 52° | — | — |
| 2012 | 43° | 37° | 40° | — | — |
| 2011 | 58° | — | — | 0.23" | — |
| 2010 | 58° | 38° | 48° | — | — |
| 2009 | 58° | 46° | 52° | — | — |
| 2008 | 52° | 38° | 45° | 1.88" | — |
| 2007 | 54° | 39° | 46° | — | — |
| 2006 | 58° | 44° | 51° | 0.41" | — |
| 2005 | 59° | 28° | 44° | — | — |
| 2004 | 62° | 44° | 53° | — | — |
| 2003 | 57° | 30° | 44° | — | — |
| 2002 | 60° | 46° | 53° | 2.16" | — |
| 2001 | 56° | 35° | 45° | — | — |
| 2000 | 62° | 47° | 54° | 0.08" | — |
| 1999 | 58° | 34° | 46° | — | — |
| 1998 | 67° | 39° | 53° | — | — |
| 1997 | 54° | 35° | 44° | 0.05" | — |
| 1996 | 63° | 35° | 49° | — | — |
| 1995 | 59° | 52° | 55° | 0.81" | — |
| 1994 | 51° | 32° | 42° | 0.18" | — |
| 1993 | 57° | 34° | 45° | 0.05" | — |
| 1992 | 60° | 34° | 47° | — | — |
| 1991 | 54° | 35° | 44° | — | — |
| 1990 | 52° | 39° | 45° | 1.52" | — |
| 1989 | 61° | 33° | 47° | — | — |
| 1988 | 61° | 49° | 55° | — | — |
| 1987 | 50° | — | — | 0.13" | — |
| 1986 | 47° | 40° | 43° | 0.51" | — |
| 1985 | 50° | 29° | 39° | — | — |
| 1984 | 58° | 40° | 49° | 0.64" | — |
| 1983 | 63° | 48° | 55° | — | — |
| 1982 | 55° | 44° | 50° | — | — |
| 1981warmest | 63° | 53° | 58° | 0.23" | — |
| 1980 | 68° | 35° | 52° | — | — |
| 1979 | 62° | 29° | 45° | — | — |
| 1978 | 67° | 32° | 49° | — | — |
| 1977 | 60° | 48° | 54° | 3.35" | — |
| 1976 | 69° | 30° | 50° | — | — |
| 1975 | 60° | 26° | 43° | — | — |
| 1974 | 66° | 42° | 54° | — | — |
| 1973 | 55° | 40° | 47° | 0.03" | — |
| 1972coldest | 38° | 29° | 33° | 0.23" | — |
| 1971 | 57° | 29° | 43° | — | — |