Weather on December 21
Berkeley, CA
55 Years of Data
Avg High
56°F
Avg Low
44°F
Warmest
1999
63°F avg
Coldest
1990
34°F avg
About This Date
December 21st in Berkeley, CA typically brings cool winter weather, with average highs around 56°F and lows near 44°F. Over 55 years of records, the warmest December 21st was in 1999 (63°F average), while the coldest was 1990 (34°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 45% of December 21st dates historically, with the wettest December 21st recording 5.08" of rain. The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Berkeley, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 63° | 58° | 60° | 0.51" | — |
| 2024 | 60° | 49° | 54° | 0.28" | — |
| 2023 | 63° | 51° | 57° | — | — |
| 2022 | 59° | 42° | 51° | — | — |
| 2021 | 54° | 41° | 47° | — | — |
| 2020 | 61° | 41° | 51° | — | — |
| 2019 | 59° | 45° | 52° | — | — |
| 2018 | 57° | 49° | 53° | 0.2" | — |
| 2017 | 56° | 42° | 49° | — | — |
| 2016 | 60° | 45° | 52° | — | — |
| 2015 | 53° | 47° | 50° | 3.43" | — |
| 2014 | 61° | 54° | 57° | 0.1" | — |
| 2013 | 60° | 43° | 51° | — | — |
| 2012 | 60° | 48° | 54° | — | — |
| 2011 | 60° | 40° | 50° | — | — |
| 2010 | 53° | 46° | 50° | 0.43" | — |
| 2009 | 61° | 48° | 54° | 0.38" | — |
| 2008 | 52° | 41° | 46° | 0.69" | — |
| 2007 | 55° | 36° | 45° | — | — |
| 2006 | 55° | 42° | 49° | 1.52" | — |
| 2005 | 64° | 55° | 60° | 1.7" | — |
| 2004 | 52° | 37° | 44° | — | — |
| 2003 | 58° | 47° | 52° | 0.13" | — |
| 2002 | 52° | 43° | 47° | 0.76" | — |
| 2001 | 49° | 44° | 46° | — | — |
| 2000 | 58° | 41° | 49° | — | — |
| 1999warmest | 70° | 57° | 63° | — | — |
| 1998 | 44° | 27° | 35° | — | — |
| 1997 | 55° | 41° | 48° | — | — |
| 1996 | 53° | 47° | 50° | 5.08" | — |
| 1995 | 68° | 54° | 61° | — | — |
| 1994 | 55° | 42° | 49° | — | — |
| 1993 | 48° | 35° | 42° | — | — |
| 1992 | 55° | 48° | 52° | — | — |
| 1991 | 55° | 45° | 50° | — | — |
| 1990coldest | 39° | 28° | 34° | — | — |
| 1989 | 57° | 40° | 48° | — | — |
| 1988 | 50° | 41° | 46° | 0.36" | — |
| 1987 | 52° | 44° | 48° | 0.1" | — |
| 1986 | 60° | 43° | 51° | — | — |
| 1985 | 58° | 35° | 46° | — | — |
| 1984 | 54° | 38° | 46° | — | — |
| 1983 | 51° | 38° | 44° | 0.05" | — |
| 1982 | 57° | 49° | 53° | 5.05" | — |
| 1981 | 60° | 50° | 55° | 0.05" | — |
| 1980 | 59° | 55° | 57° | 1.73" | — |
| 1979 | 57° | 48° | 53° | 0.69" | — |
| 1978 | 56° | 40° | 48° | — | — |
| 1977 | 62° | 53° | 58° | 0.99" | — |
| 1976 | 56° | 40° | 48° | — | — |
| 1975 | 55° | 43° | 49° | 1.09" | — |
| 1974 | 54° | 40° | 47° | — | — |
| 1973 | 51° | 47° | 49° | 2.18" | — |
| 1972 | 59° | 49° | 54° | 0.13" | — |
| 1971 | 50° | 43° | 46° | 0.76" | — |
55 years of data from BERKELEY