Weather on May 21
Redding, CA
55 Years of Data
Avg High
82°F
Avg Low
55°F
Warmest
2001
84°F avg
Coldest
1972
53°F avg
About This Date
May 21st in Redding, CA typically brings warm spring weather, with average highs around 82°F and lows near 55°F — a 27°F daily swing. Over 55 years of records, the warmest May 21st was in 2001 (84°F average), while the coldest was 1972 (53°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 16% of May 21st dates historically, with the wettest May 21st recording 1.8" of rain. The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for May 21st in Redding, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 93° | 66° | 80° | — | — |
| 2024 | 89° | 65° | 77° | — | — |
| 2023 | 92° | 63° | 77° | — | — |
| 2022 | 88° | 62° | 75° | — | — |
| 2021 | 75° | 46° | 61° | — | — |
| 2020 | 84° | 53° | 69° | — | — |
| 2019 | 61° | 51° | 56° | 1.04" | — |
| 2018 | 93° | 54° | 73° | — | — |
| 2017 | 97° | 68° | 82° | — | — |
| 2016 | 65° | 52° | 58° | 0.15" | — |
| 2015 | 82° | 59° | 71° | 0.03" | — |
| 2014 | 91° | 51° | 71° | — | — |
| 2013 | 74° | 50° | 62° | — | — |
| 2012 | 85° | 61° | 73° | — | — |
| 2011 | 81° | 60° | 70° | — | — |
| 2010 | 66° | 44° | 55° | — | — |
| 2009 | 90° | 50° | 70° | — | — |
| 2008 | 78° | 50° | 64° | — | — |
| 2007 | 83° | 58° | 70° | — | — |
| 2006 | 73° | 58° | 65° | 0.64" | — |
| 2005 | 82° | 49° | 65° | — | — |
| 2004 | 79° | 58° | 68° | — | — |
| 2003 | 94° | 49° | 71° | — | — |
| 2002 | 63° | 48° | 55° | 0.25" | — |
| 2001warmest | 99° | 69° | 84° | — | — |
| 2000 | 100° | 67° | 83° | — | — |
| 1999 | 91° | 54° | 72° | — | — |
| 1998 | 68° | 48° | 58° | 0.03" | — |
| 1997 | 86° | 55° | 71° | — | — |
| 1996 | 62° | 50° | 56° | 1.8" | — |
| 1995 | 76° | 56° | 66° | — | — |
| 1994 | 77° | 56° | 66° | — | — |
| 1993 | 78° | 56° | 67° | — | — |
| 1992 | 89° | 59° | 74° | — | — |
| 1991 | 89° | 51° | 70° | — | — |
| 1990 | 68° | 56° | 62° | 0.18" | — |
| 1989 | 76° | 50° | 63° | — | — |
| 1988 | 93° | 56° | 74° | — | — |
| 1987 | 79° | 56° | 67° | — | — |
| 1986 | 72° | 43° | 57° | — | — |
| 1985 | 91° | 50° | 71° | — | — |
| 1984 | 86° | 59° | 73° | — | — |
| 1983 | 95° | 53° | 74° | — | — |
| 1982 | 91° | 45° | 68° | — | — |
| 1981 | 75° | 56° | 65° | — | — |
| 1980 | 95° | 52° | 73° | — | — |
| 1979 | 83° | 57° | 70° | — | — |
| 1978 | 90° | 59° | 74° | — | — |
| 1977 | 84° | 58° | 71° | — | — |
| 1976 | 92° | 60° | 76° | — | — |
| 1975 | 82° | 49° | 65° | — | — |
| 1974 | 81° | 54° | 67° | — | — |
| 1973 | 91° | 58° | 74° | — | — |
| 1972coldest | 60° | 47° | 53° | 0.86" | — |
| 1971 | 76° | 48° | 62° | — | — |
55 years of data from REDDING FIRE STN 2