Weather on May 21
Tempe, AZ
55 Years of Data
Avg High
95°F
Avg Low
61°F
Warmest
2005
89°F avg
Coldest
1981
64°F avg
About This Date
May 21st in Tempe, AZ typically brings hot spring weather, with average highs around 95°F and lows near 61°F — a 34°F daily swing. Over 55 years of records, the warmest May 21st was in 2005 (89°F average), while the coldest was 1981 (64°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 4% of May 21st dates historically. The last decade has been 6.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 6.1°F cooler on this date compared to 20-30 years ago.
Planning for May 21st in Tempe, AZ? 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 | 103° | 61° | 82° | — | — |
| 2024 | 94° | 57° | 75° | — | — |
| 2023 | 101° | 64° | 82° | — | — |
| 2022 | 98° | 56° | 77° | — | — |
| 2021 | — | 66° | — | — | — |
| 2020 | 91° | 54° | 72° | — | — |
| 2019 | 81° | 48° | 64° | — | — |
| 2018 | 93° | 61° | 77° | — | — |
| 2017 | 98° | 57° | 78° | — | — |
| 2016 | — | 66° | — | — | — |
| 2015 | 89° | 60° | 75° | — | — |
| 2014 | — | 54° | — | — | — |
| 2013 | 97° | 59° | 78° | — | — |
| 2012 | 105° | 62° | 84° | — | — |
| 2011 | 93° | 56° | 74° | — | — |
| 2010 | 99° | 58° | 78° | — | — |
| 2009 | 89° | — | — | — | — |
| 2008 | 92° | 69° | 80° | — | — |
| 2007 | 97° | 63° | 80° | — | — |
| 2006 | 106° | 67° | 86° | — | — |
| 2005warmest | 105° | 73° | 89° | — | — |
| 2004 | 93° | 66° | 80° | — | — |
| 2003 | 105° | 71° | 88° | — | — |
| 2002 | 92° | 60° | 76° | — | — |
| 2001 | 100° | 70° | 85° | — | — |
| 2000 | 103° | 73° | 88° | — | — |
| 1999 | 98° | 63° | 80° | — | — |
| 1998 | 86° | 60° | 73° | — | — |
| 1997 | 94° | 68° | 81° | — | — |
| 1996 | 96° | 64° | 80° | — | — |
| 1995 | 95° | 66° | 81° | — | — |
| 1994 | 94° | 58° | 76° | — | — |
| 1993 | 97° | 66° | 81° | — | — |
| 1992 | 77° | 64° | 71° | 0.25" | — |
| 1991 | 91° | 60° | 76° | — | — |
| 1990 | 96° | 63° | 79° | — | — |
| 1989 | 103° | 66° | 84° | — | — |
| 1988 | 98° | 65° | 81° | — | — |
| 1987 | 88° | 61° | 74° | 0.1" | — |
| 1986 | 101° | 66° | 83° | — | — |
| 1985 | 98° | 64° | 81° | — | — |
| 1984 | 101° | 68° | 84° | — | — |
| 1983 | 93° | 59° | 76° | — | — |
| 1982 | 97° | 61° | 79° | — | — |
| 1981coldest | 84° | 45° | 64° | — | — |
| 1980 | 105° | 59° | 82° | — | — |
| 1979 | 75° | 55° | 65° | — | — |
| 1978 | 103° | 56° | 79° | — | — |
| 1977 | 96° | 49° | 72° | — | — |
| 1976 | 95° | 60° | 78° | — | — |
| 1975 | 90° | 54° | 72° | — | — |
| 1974 | 85° | 45° | 65° | — | — |
| 1973 | 101° | 59° | 80° | — | — |
| 1972 | 85° | 53° | 69° | — | — |
| 1971 | 98° | 52° | 75° | — | — |
55 years of data from TEMPE ASU