Weather on December 21
Santa Maria, CA
55 Years of Data
Avg High
63°F
Avg Low
38°F
Warmest
1977
62°F avg
Coldest
1990
36°F avg
About This Date
December 21st in Santa Maria, CA typically brings mild winter weather, with average highs around 63°F and lows near 38°F — a 25°F daily swing. Over 55 years of records, the warmest December 21st was in 1977 (62°F average), while the coldest was 1990 (36°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 25% of December 21st dates historically, with the wettest December 21st recording 1.32" of rain. The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Santa Maria, CA? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 49° | 56° | — | — |
| 2024 | 66° | 42° | 54° | — | — |
| 2023 | 66° | 51° | 59° | 0.28" | — |
| 2022 | 68° | 36° | 52° | — | — |
| 2021 | 61° | 38° | 49° | — | — |
| 2020 | 77° | 40° | 58° | — | — |
| 2019 | 71° | 43° | 57° | — | — |
| 2018 | 67° | 51° | 59° | — | — |
| 2017 | 62° | 32° | 47° | — | — |
| 2016 | 64° | 45° | 54° | — | — |
| 2015 | 60° | 40° | 50° | 0.23" | — |
| 2014 | 72° | 53° | 62° | — | — |
| 2013 | 65° | 35° | 50° | — | — |
| 2012 | 61° | 32° | 46° | — | — |
| 2011 | 60° | 33° | 47° | — | — |
| 2010 | 60° | 49° | 54° | 0.18" | — |
| 2009 | 61° | 44° | 52° | 0.38" | — |
| 2008 | 62° | 34° | 48° | — | — |
| 2007 | 59° | 35° | 47° | — | — |
| 2006 | 64° | 33° | 49° | 0.1" | — |
| 2005 | 69° | 41° | 55° | — | — |
| 2004 | 64° | 38° | 51° | — | — |
| 2003 | 63° | 45° | 54° | 0.18" | — |
| 2002 | 54° | 45° | 49° | 1.3" | — |
| 2001 | 56° | 42° | 49° | 0.2" | — |
| 2000 | 60° | 34° | 47° | — | — |
| 1999 | 79° | 40° | 59° | — | — |
| 1998 | 50° | 25° | 37° | — | — |
| 1997 | 57° | 38° | 47° | — | — |
| 1996 | 57° | 42° | 50° | — | — |
| 1995 | 60° | 32° | 46° | — | — |
| 1994 | 70° | 37° | 53° | — | — |
| 1993 | 63° | 29° | 46° | — | — |
| 1992 | 62° | 31° | 46° | — | — |
| 1991 | 74° | 31° | 52° | — | — |
| 1990coldest | 43° | 29° | 36° | — | — |
| 1989 | 64° | 36° | 50° | — | — |
| 1988 | 55° | 37° | 46° | — | — |
| 1987 | 63° | 34° | 48° | — | — |
| 1986 | 66° | 33° | 50° | — | — |
| 1985 | 78° | 38° | 58° | — | — |
| 1984 | 63° | 32° | 47° | — | — |
| 1983 | 56° | 33° | 44° | — | — |
| 1982 | 60° | 46° | 53° | 0.36" | — |
| 1981 | 61° | 41° | 51° | 0.28" | — |
| 1980 | 67° | 40° | 53° | — | — |
| 1979 | 62° | 42° | 52° | 0.13" | — |
| 1978 | 61° | 27° | 44° | — | — |
| 1977warmest | 70° | 55° | 62° | 0.28" | — |
| 1976 | 71° | 31° | 51° | — | — |
| 1975 | 64° | 35° | 50° | — | — |
| 1974 | 63° | 39° | 51° | — | — |
| 1973 | 60° | 36° | 48° | 1.32" | — |
| 1972 | 71° | 43° | 57° | — | — |
| 1971 | 60° | 32° | 46° | 0.25" | — |
55 years of data from SANTA MARIA PUBLIC AP