Weather on December 21
Hesperia, CA
55 Years of Data
Avg High
59°F
Avg Low
31°F
Warmest
2025
62°F avg
Coldest
2008
28°F avg
About This Date
December 21st in Hesperia, CA typically brings cool winter weather, with average highs around 59°F and lows near 31°F — a 28°F daily swing. Over 51 years of records, the warmest December 21st was in 2025 (62°F average), while the coldest was 2008 (28°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 10% of December 21st dates historically, with the wettest December 21st recording 5.79" of rain. The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Hesperia, CA? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 77° | 46° | 62° | — | — |
| 2020 | 65° | 34° | 49° | — | — |
| 2019 | 56° | 31° | 43° | — | — |
| 2018 | 72° | 42° | 57° | — | — |
| 2017 | 52° | 25° | 38° | — | — |
| 2016 | 53° | 39° | 46° | 0.2" | — |
| 2015 | 60° | 35° | 48° | — | — |
| 2014 | 64° | 42° | 53° | — | — |
| 2013 | 60° | 32° | 46° | — | — |
| 2012 | 48° | 23° | 36° | — | — |
| 2011 | 62° | 31° | 46° | — | — |
| 2010 | 57° | 41° | 49° | 5.79" | — |
| 2009 | 60° | 40° | 50° | — | — |
| 2008coldest | 33° | 23° | 28° | — | — |
| 2007 | 57° | 28° | 43° | — | — |
| 2006 | 56° | 22° | 39° | — | — |
| 2005 | 61° | 35° | 48° | — | — |
| 2004 | 71° | 36° | 53° | — | — |
| 2003 | 62° | 39° | 51° | — | — |
| 2002 | 52° | 36° | 44° | 0.05" | — |
| 2001 | 60° | 37° | 49° | 0.28" | — |
| 2000 | 67° | 29° | 48° | — | — |
| 1999 | 69° | 28° | 49° | — | — |
| 1998 | 50° | 20° | 35° | — | — |
| 1997 | 55° | 35° | 45° | 0.03" | — |
| 1996 | 69° | 45° | 57° | — | — |
| 1995 | 55° | 22° | 38° | — | — |
| 1994 | 66° | 26° | 46° | — | — |
| 1993 | 52° | 20° | 36° | — | — |
| 1992 | 45° | 19° | 32° | — | — |
| 1991 | 55° | 27° | 41° | — | — |
| 1990 | 41° | 24° | 33° | — | — |
| 1989 | 60° | 27° | 43° | — | — |
| 1988 | 49° | 23° | 36° | — | — |
| 1987 | 54° | 26° | 40° | — | — |
| 1986 | 54° | 29° | 41° | — | — |
| 1985 | 68° | 30° | 49° | — | — |
| 1984 | 44° | 23° | 34° | — | — |
| 1983 | 55° | 29° | 42° | — | — |
| 1982 | 69° | 38° | 53° | — | — |
| 1981 | 70° | 40° | 55° | — | — |
| 1980 | 69° | 30° | 50° | — | — |
| 1979 | 64° | 36° | 50° | — | — |
| 1978 | 48° | 24° | 36° | — | — |
| 1977 | 50° | 31° | 40° | — | — |
| 1976 | 63° | 23° | 43° | — | — |
| 1975 | 62° | 30° | 46° | — | — |
| 1974 | 66° | 29° | 47° | — | — |
| 1973 | 56° | 24° | 40° | — | — |
| 1972 | 67° | 32° | 49° | — | — |
| 1971 | 59° | 26° | 43° | — | — |
51 years of data from HESPERIA 2E