Weather on May 21
Hesperia, CA
55 Years of Data
Avg High
82°F
Avg Low
50°F
Warmest
1984
80°F avg
Coldest
1975
47°F avg
About This Date
May 21st in Hesperia, CA typically brings warm spring weather, with average highs around 82°F and lows near 50°F — a 32°F daily swing. Over 52 years of records, the warmest May 21st was in 1984 (80°F average), while the coldest was 1975 (47°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 2% of May 21st dates historically, with the wettest May 21st recording 0.79" of rain. The last decade has been 6.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 6.0°F cooler on this date compared to 20-30 years ago.
Planning for May 21st in Hesperia, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 54° | 73° | — | — |
| 2021 | 69° | 40° | 54° | — | — |
| 2020 | 86° | 46° | 66° | — | — |
| 2019 | 60° | 45° | 52° | — | — |
| 2018 | 70° | 53° | 61° | — | — |
| 2017 | 91° | 59° | 75° | — | — |
| 2016 | 65° | 46° | 55° | — | — |
| 2015 | 70° | 49° | 59° | — | — |
| 2014 | 71° | 46° | 59° | — | — |
| 2013 | 86° | 57° | 72° | — | — |
| 2012 | 94° | 62° | 78° | — | — |
| 2011 | 77° | 50° | 64° | — | — |
| 2010 | 80° | 53° | 67° | — | — |
| 2009 | 83° | 63° | 73° | — | — |
| 2008 | 93° | 54° | 73° | — | — |
| 2007 | 95° | 55° | 75° | — | — |
| 2006 | 85° | 60° | 72° | — | — |
| 2005 | 99° | 50° | 74° | — | — |
| 2004 | 79° | 53° | 66° | — | — |
| 2003 | 97° | 52° | 74° | — | — |
| 2002 | 64° | 41° | 53° | — | — |
| 2001 | 98° | 58° | 78° | — | — |
| 2000 | 103° | 55° | 79° | — | — |
| 1999 | 80° | 43° | 61° | — | — |
| 1998 | 76° | 43° | 59° | — | — |
| 1997 | 90° | 53° | 71° | 0.79" | — |
| 1996 | 86° | 50° | 68° | — | — |
| 1995 | 87° | 50° | 69° | — | — |
| 1994 | 79° | 43° | 61° | — | — |
| 1993 | 80° | 52° | 66° | — | — |
| 1992 | 79° | 46° | 62° | — | — |
| 1991 | 77° | 40° | 58° | — | — |
| 1990 | 78° | 46° | 62° | — | — |
| 1989 | 93° | 52° | 72° | — | — |
| 1988 | 92° | 52° | 72° | — | — |
| 1987 | 65° | 37° | 51° | — | — |
| 1986 | 87° | 55° | 71° | — | — |
| 1985 | 88° | 53° | 70° | — | — |
| 1984warmest | 97° | 63° | 80° | — | — |
| 1983 | 86° | 55° | 71° | — | — |
| 1982 | 89° | 52° | 70° | — | — |
| 1981 | 66° | 40° | 53° | — | — |
| 1980 | 92° | 54° | 73° | — | — |
| 1979 | 79° | 51° | 65° | — | — |
| 1978 | 89° | 49° | 69° | — | — |
| 1977 | 81° | 47° | 64° | — | — |
| 1976 | 79° | 56° | 67° | — | — |
| 1975coldest | 57° | 38° | 47° | — | — |
| 1974 | 74° | 41° | 57° | — | — |
| 1973 | 86° | 49° | 67° | — | — |
| 1972 | 61° | 37° | 49° | — | — |
| 1971 | 76° | 40° | 58° | — | — |
52 years of data from HESPERIA 2E