Weather on December 20
Hesperia, CA
55 Years of Data
Avg High
59°F
Avg Low
31°F
Warmest
2025
63°F avg
Coldest
1992
31°F avg
About This Date
December 20th 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 50 years of records, the warmest December 20th was in 2025 (63°F average), while the coldest was 1992 (31°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 10% of December 20th dates historically, with the wettest December 20th recording 1.17" of rain. The last decade has been 4.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.8°F warmer on this date compared to 20-30 years ago.
Planning for December 20th in Hesperia, CA? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 75° | 50° | 63° | — | — |
| 2020 | 60° | 27° | 43° | — | — |
| 2019 | 60° | 29° | 44° | — | — |
| 2018 | 67° | 36° | 51° | — | — |
| 2017 | 59° | 51° | 55° | — | — |
| 2016 | 54° | 24° | 39° | — | — |
| 2015 | 52° | 34° | 43° | 0.15" | — |
| 2014 | 60° | 39° | 50° | — | — |
| 2013 | 49° | 32° | 40° | 0.71" | — |
| 2012 | 45° | 22° | 33° | — | — |
| 2011 | 53° | 32° | 43° | — | — |
| 2010 | 60° | 50° | 55° | — | — |
| 2009 | 58° | 37° | 47° | — | — |
| 2007 | 61° | 39° | 50° | — | — |
| 2006 | 50° | 18° | 34° | — | — |
| 2005 | 58° | 31° | 44° | — | — |
| 2004 | 67° | 29° | 48° | — | — |
| 2003 | 60° | — | — | — | — |
| 2002 | 58° | 35° | 46° | 0.46" | — |
| 2001 | 63° | 28° | 45° | — | — |
| 2000 | 61° | 29° | 45° | — | — |
| 1999 | 68° | 32° | 50° | — | — |
| 1998 | 53° | 32° | 43° | — | — |
| 1997 | 54° | 23° | 38° | — | — |
| 1996 | 58° | 23° | 40° | — | — |
| 1995 | 58° | 28° | 43° | — | — |
| 1994 | 65° | 26° | 45° | — | — |
| 1993 | 53° | 24° | 39° | — | — |
| 1992coldest | 44° | 18° | 31° | — | — |
| 1991 | 52° | 27° | 39° | — | — |
| 1990 | 56° | 27° | 41° | — | — |
| 1989 | 57° | 25° | 41° | — | — |
| 1988 | 56° | 32° | 44° | — | — |
| 1987 | 44° | 26° | 35° | — | — |
| 1986 | 58° | 35° | 46° | — | — |
| 1985 | 68° | 29° | 48° | — | — |
| 1984 | 52° | 29° | 40° | 1.17" | — |
| 1983 | 69° | 35° | 52° | — | — |
| 1982 | 60° | 31° | 45° | — | — |
| 1981 | 77° | 41° | 59° | — | — |
| 1980 | 69° | 32° | 51° | — | — |
| 1979 | 65° | 29° | 47° | — | — |
| 1978 | 46° | 23° | 35° | — | — |
| 1977 | 52° | 35° | 43° | — | — |
| 1976 | 61° | 29° | 45° | — | — |
| 1975 | 61° | 25° | 43° | 0.53" | — |
| 1974 | 62° | 29° | 45° | — | — |
| 1973 | 60° | 23° | 42° | — | — |
| 1972 | 67° | 36° | 51° | — | — |
| 1971 | 57° | 23° | 40° | — | — |
50 years of data from HESPERIA 2E