Weather on December 21
Roseville, CA
55 Years of Data
Avg High
55°F
Avg Low
38°F
Warmest
2025
60°F avg
Coldest
1990
30°F avg
About This Date
December 21st in Roseville, CA typically brings cool winter weather, with average highs around 55°F and lows near 38°F. Over 54 years of records, the warmest December 21st was in 2025 (60°F average), while the coldest was 1990 (30°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 11% of December 21st dates historically, with the wettest December 21st recording 3.43" of rain. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Roseville, CA? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 63° | 57° | 60° | — | — |
| 2024 | 55° | 45° | 50° | — | — |
| 2023 | 62° | 44° | 53° | — | — |
| 2022 | 51° | 36° | 43° | — | — |
| 2021 | 47° | 38° | 42° | — | — |
| 2020 | 55° | 31° | 43° | — | — |
| 2019 | 57° | 44° | 51° | — | — |
| 2018 | 57° | 45° | 51° | — | — |
| 2017 | 57° | 26° | 42° | — | — |
| 2016 | 58° | 38° | 48° | — | — |
| 2015 | 52° | 47° | 49° | — | — |
| 2014 | 65° | 47° | 56° | — | — |
| 2013 | 59° | 34° | 46° | — | — |
| 2012 | 51° | 44° | 48° | — | — |
| 2011 | 59° | 27° | 43° | — | — |
| 2010 | 57° | 45° | 51° | — | — |
| 2009 | 58° | 46° | 52° | — | — |
| 2008 | 47° | 41° | 44° | — | — |
| 2007 | 53° | 29° | 41° | — | — |
| 2006 | 47° | 37° | 42° | — | — |
| 2005 | 63° | 54° | 58° | — | — |
| 2004 | 60° | 32° | 46° | — | — |
| 2003 | 62° | 41° | 52° | — | — |
| 2002 | 56° | 37° | 46° | — | — |
| 2001 | 57° | 44° | 51° | — | — |
| 2000 | 59° | 34° | 46° | — | — |
| 1999 | 72° | 32° | 52° | — | — |
| 1998 | 43° | 19° | 31° | — | — |
| 1997 | 55° | 31° | 43° | — | — |
| 1996 | 47° | 46° | 46° | — | — |
| 1995 | 55° | 32° | 44° | — | — |
| 1994 | 44° | 40° | 42° | — | — |
| 1993 | 37° | 31° | 34° | — | — |
| 1992 | 52° | 36° | 44° | — | — |
| 1991 | 55° | 32° | 44° | — | — |
| 1990coldest | 41° | 20° | 30° | — | — |
| 1989 | 44° | 33° | 39° | — | — |
| 1988 | 60° | 44° | 52° | 1.65" | — |
| 1986 | 59° | 36° | 47° | — | — |
| 1985 | 39° | 31° | 35° | 0.05" | — |
| 1984 | 53° | 33° | 43° | — | — |
| 1983 | 53° | 35° | 44° | — | — |
| 1982 | 58° | 45° | 51° | 3.43" | — |
| 1981 | 61° | 49° | 55° | 1.12" | — |
| 1980 | 58° | 42° | 50° | — | — |
| 1979 | 54° | 43° | 48° | 0.56" | — |
| 1978 | 49° | 34° | 41° | — | — |
| 1977 | 64° | 40° | 52° | — | — |
| 1976 | 63° | 40° | 51° | — | — |
| 1975 | 61° | 30° | 45° | — | — |
| 1974 | 45° | 39° | 42° | — | — |
| 1973 | 52° | 37° | 44° | 1.02" | — |
| 1972 | 57° | 48° | 53° | — | — |
| 1971 | 52° | 28° | 40° | — | — |
54 years of data from ROCKLIN