Weather on December 21
Temecula, CA
55 Years of Data
Avg High
65°F
Avg Low
43°F
Warmest
2005
73°F avg
Coldest
1990
37°F avg
About This Date
December 21st in Temecula, CA typically brings mild winter weather, with average highs around 65°F and lows near 43°F. Over 51 years of records, the warmest December 21st was in 2005 (73°F average), while the coldest was 1990 (37°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 12% of December 21st dates historically, with the wettest December 21st recording 1.16" of rain. The last decade has been 7.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 7.5°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Temecula, CA? Great weather for outdoor activities.
Warming Trend
2.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 47° | 62° | — | — |
| 2024 | 73° | 48° | 60° | — | — |
| 2023 | 69° | 52° | 61° | — | — |
| 2022 | 76° | 45° | 61° | — | — |
| 2021 | 70° | 53° | 61° | — | — |
| 2020 | 85° | 54° | 70° | — | — |
| 2019 | 75° | 55° | 65° | — | — |
| 2018 | 66° | 53° | 59° | — | — |
| 2017 | 62° | 40° | 51° | — | — |
| 2016 | 65° | 55° | 60° | 1.16" | — |
| 2015 | 63° | 40° | 52° | 0.07" | — |
| 2014 | 69° | 47° | 58° | — | — |
| 2013 | 61° | 42° | 51° | — | — |
| 2012 | 66° | 41° | 53° | — | — |
| 2011 | 63° | 42° | 52° | — | — |
| 2010 | 53° | 47° | 50° | — | — |
| 2009 | 65° | 49° | 57° | — | — |
| 2008 | 66° | 42° | 54° | — | — |
| 2007 | 53° | 41° | 47° | — | — |
| 2006 | 65° | 37° | 51° | — | — |
| 2005warmest | 86° | 59° | 73° | — | — |
| 2004 | 66° | 46° | 56° | — | — |
| 2003 | 65° | 45° | 55° | — | — |
| 2002 | 50° | 43° | 46° | — | — |
| 2001 | 49° | 42° | 45° | — | — |
| 2000 | 72° | 51° | 61° | — | — |
| 1999 | 72° | 53° | 62° | — | — |
| 1998 | 53° | 38° | 45° | — | — |
| 1997 | 51° | 40° | 45° | — | — |
| 1996 | 50° | 45° | 47° | — | — |
| 1995 | 59° | 41° | 50° | — | — |
| 1994 | 80° | 53° | 67° | — | — |
| 1993 | 63° | 54° | 58° | — | — |
| 1992 | 70° | 41° | 55° | — | — |
| 1990coldest | 44° | 31° | 37° | — | — |
| 1989 | 65° | 31° | 48° | — | — |
| 1988 | 60° | 30° | 45° | 0.97" | — |
| 1987 | 63° | 30° | 46° | — | — |
| 1986 | 68° | 34° | 51° | — | — |
| 1985 | 76° | 35° | 55° | — | — |
| 1983 | 64° | 47° | 55° | — | — |
| 1982 | 56° | 35° | 45° | — | — |
| 1981 | 65° | 44° | 54° | 0.03" | — |
| 1980 | 80° | 37° | 59° | — | — |
| 1979 | 64° | 45° | 54° | 0.08" | — |
| 1978 | 64° | 29° | 46° | — | — |
| 1977 | 63° | 42° | 52° | — | — |
| 1976 | 70° | 31° | 50° | — | — |
| 1975 | 63° | 34° | 48° | 0.94" | — |
| 1974 | 75° | 32° | 54° | — | — |
| 1973 | 65° | 26° | 45° | — | — |
51 years of data from FALLBROOK 5 NE