Weather on December 18
Hesperia, CA
55 Years of Data
Avg High
60°F
Avg Low
32°F
Warmest
2025
59°F avg
Coldest
1984
33°F avg
About This Date
December 18th in Hesperia, CA typically brings mild winter weather, with average highs around 60°F and lows near 32°F — a 28°F daily swing. Over 50 years of records, the warmest December 18th was in 2025 (59°F average), while the coldest was 1984 (33°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 12% of December 18th dates historically. The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
Planning for December 18th in Hesperia, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 73° | 45° | 59° | — | — |
| 2020 | 61° | 29° | 45° | — | — |
| 2019 | 48° | 24° | 36° | — | — |
| 2018 | 62° | 39° | 51° | — | — |
| 2017 | 60° | 29° | 44° | — | — |
| 2016 | 48° | 24° | 36° | — | — |
| 2015 | 56° | 29° | 42° | — | — |
| 2014 | 53° | 35° | 44° | — | — |
| 2013 | 65° | 45° | 55° | — | — |
| 2012 | 51° | 40° | 45° | 0.41" | — |
| 2011 | 52° | 35° | 43° | 0.2" | — |
| 2010 | 51° | 49° | 50° | — | — |
| 2009 | 63° | 36° | 49° | — | — |
| 2007 | 61° | 37° | 49° | — | — |
| 2006 | 51° | 23° | 37° | — | — |
| 2005 | 57° | 38° | 47° | — | — |
| 2004 | 64° | 27° | 45° | — | — |
| 2003 | 58° | 33° | 45° | — | — |
| 2002 | 55° | 36° | 45° | 0.03" | — |
| 2001 | 61° | 28° | 44° | — | — |
| 2000 | 70° | 33° | 51° | — | — |
| 1999 | 72° | 29° | 50° | — | — |
| 1998 | 74° | 39° | 56° | — | — |
| 1997 | 64° | 42° | 53° | — | — |
| 1996 | 58° | 27° | 42° | — | — |
| 1995 | 57° | 23° | 40° | — | — |
| 1994 | 62° | 26° | 44° | — | — |
| 1993 | 53° | 23° | 38° | — | — |
| 1992 | 55° | 32° | 44° | — | — |
| 1991 | 59° | 42° | 51° | — | — |
| 1990 | 54° | 23° | 38° | — | — |
| 1989 | 68° | 35° | 52° | — | — |
| 1988 | 54° | 28° | 41° | — | — |
| 1987 | 39° | 31° | 35° | 0.38" | — |
| 1986 | 60° | 33° | 47° | — | — |
| 1985 | 62° | 29° | 45° | — | — |
| 1984coldest | 40° | 26° | 33° | — | — |
| 1983 | 61° | 29° | 45° | — | — |
| 1982 | 70° | 29° | 49° | — | — |
| 1981 | 67° | 31° | 49° | — | — |
| 1980 | 74° | 34° | 54° | — | — |
| 1979 | 70° | 27° | 48° | — | — |
| 1978 | 55° | 41° | 48° | 0.18" | — |
| 1977 | 64° | 44° | 54° | 0.33" | — |
| 1976 | 62° | 28° | 45° | — | — |
| 1975 | 62° | 24° | 43° | — | — |
| 1974 | 63° | 23° | 43° | — | — |
| 1973 | 75° | 31° | 53° | — | — |
| 1972 | 56° | 28° | 42° | — | — |
| 1971 | 55° | 28° | 42° | — | — |
50 years of data from HESPERIA 2E