Weather on May 20
Tempe, AZ
55 Years of Data
Avg High
96°F
Avg Low
62°F
Warmest
2009
90°F avg
Coldest
1974
58°F avg
About This Date
May 20th in Tempe, AZ typically brings hot spring weather, with average highs around 96°F and lows near 62°F — a 34°F daily swing. Over 55 years of records, the warmest May 20th was in 2009 (90°F average), while the coldest was 1974 (58°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 7% of May 20th dates historically, with the wettest May 20th recording 2.01" of rain. The last decade has been 4.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.3°F cooler on this date compared to 20-30 years ago.
Planning for May 20th in Tempe, AZ? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 99° | 62° | 80° | — | — |
| 2024 | 97° | 58° | 77° | — | — |
| 2023 | 98° | 62° | 80° | — | — |
| 2022 | 98° | 58° | 78° | — | — |
| 2021 | 99° | 67° | 83° | — | — |
| 2020 | — | 55° | — | — | — |
| 2019 | — | 55° | — | 0.03" | — |
| 2018 | 97° | 61° | 79° | — | — |
| 2017 | 94° | 55° | 74° | — | — |
| 2016 | 96° | 63° | 79° | — | — |
| 2015 | 91° | 53° | 72° | — | — |
| 2014 | — | 59° | — | — | — |
| 2013 | 95° | 60° | 78° | — | — |
| 2012 | 102° | 58° | 80° | — | — |
| 2011 | 86° | 51° | 69° | — | — |
| 2010 | 96° | 57° | 77° | — | — |
| 2009warmest | 100° | 80° | 90° | — | — |
| 2008 | 107° | 69° | 88° | — | — |
| 2007 | 99° | 66° | 82° | — | — |
| 2006 | 106° | 67° | 86° | — | — |
| 2005 | 103° | 71° | 87° | — | — |
| 2004 | 97° | 70° | 83° | — | — |
| 2003 | 102° | 67° | 84° | — | — |
| 2002 | 97° | 65° | 81° | — | — |
| 2001 | 95° | 70° | 82° | — | — |
| 2000 | 101° | 67° | 84° | — | — |
| 1999 | 95° | 62° | 79° | — | — |
| 1998 | 95° | 71° | 83° | — | — |
| 1997 | 94° | 77° | 85° | — | — |
| 1996 | 96° | 70° | 83° | — | — |
| 1995 | 94° | 64° | 79° | — | — |
| 1994 | 86° | 58° | 72° | — | — |
| 1993 | 98° | 70° | 84° | — | — |
| 1992 | 92° | 66° | 79° | 0.89" | — |
| 1991 | 93° | 61° | 77° | — | — |
| 1990 | 89° | 57° | 73° | — | — |
| 1989 | 101° | 63° | 82° | — | — |
| 1988 | 94° | 66° | 80° | — | — |
| 1987 | 90° | 67° | 78° | 0.03" | — |
| 1986 | 103° | 68° | 85° | — | — |
| 1985 | 93° | 63° | 78° | — | — |
| 1984 | 101° | 66° | 83° | — | — |
| 1983 | 90° | 60° | 75° | — | — |
| 1982 | 95° | 62° | 79° | — | — |
| 1981 | 94° | 64° | 79° | — | — |
| 1980 | 101° | 56° | 78° | — | — |
| 1979 | 94° | 57° | 75° | 2.01" | — |
| 1978 | 102° | 54° | 78° | — | — |
| 1977 | 93° | 50° | 72° | — | — |
| 1976 | 87° | 64° | 76° | — | — |
| 1975 | 91° | 57° | 74° | — | — |
| 1974coldest | 77° | 40° | 58° | — | — |
| 1973 | 105° | 65° | 85° | — | — |
| 1972 | 87° | 52° | 69° | — | — |
| 1971 | 94° | 47° | 70° | — | — |
55 years of data from TEMPE ASU