Weather on May 20
Phoenix, AZ
55 Years of Data
Avg High
96°F
Avg Low
65°F
Warmest
2008
94°F avg
Coldest
1974
64°F avg
About This Date
May 20th in Phoenix, AZ typically brings hot spring weather, with average highs around 96°F and lows near 65°F — a 31°F daily swing. Over 55 years of records, the warmest May 20th was in 2008 (94°F average), while the coldest was 1974 (64°F) — a 30°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 0.81" of rain. The last decade has been 5.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 5.3°F cooler on this date compared to 20-30 years ago.
Planning for May 20th in Phoenix, AZ? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 97° | 70° | 83° | — | — |
| 2024 | 98° | 70° | 84° | — | — |
| 2023 | 97° | 66° | 81° | — | — |
| 2022 | 95° | 67° | 81° | — | — |
| 2021 | 96° | 70° | 83° | — | — |
| 2020 | 86° | 55° | 71° | — | — |
| 2019 | 74° | 56° | 65° | — | — |
| 2018 | 96° | 66° | 81° | — | — |
| 2017 | 94° | 54° | 74° | — | — |
| 2016 | 98° | 71° | 85° | — | — |
| 2015 | 91° | 61° | 76° | — | — |
| 2014 | 97° | 68° | 82° | — | — |
| 2013 | 96° | 71° | 84° | — | — |
| 2012 | 104° | 67° | 85° | — | — |
| 2011 | 87° | 58° | 72° | — | — |
| 2010 | 97° | 65° | 81° | — | — |
| 2009 | 104° | 84° | 94° | — | — |
| 2008warmest | 109° | 78° | 94° | — | — |
| 2007 | 98° | 70° | 84° | — | — |
| 2006 | 103° | 74° | 88° | — | — |
| 2005 | 105° | 69° | 87° | — | — |
| 2004 | 98° | 68° | 83° | — | — |
| 2003 | 102° | 68° | 85° | — | — |
| 2002 | 97° | 65° | 81° | — | — |
| 2001 | 98° | 71° | 85° | 0.08" | — |
| 2000 | 103° | 69° | 86° | — | — |
| 1999 | 97° | 64° | 80° | — | — |
| 1998 | 98° | 72° | 85° | — | — |
| 1997 | 99° | 70° | 84° | 0.1" | — |
| 1996 | 99° | 72° | 85° | — | — |
| 1995 | 96° | 66° | 81° | — | — |
| 1994 | 89° | 57° | 73° | — | — |
| 1993 | 100° | 71° | 86° | — | — |
| 1992 | 92° | 68° | 80° | 0.38" | — |
| 1991 | 92° | 63° | 77° | — | — |
| 1990 | 89° | 59° | 74° | — | — |
| 1989 | 100° | 63° | 81° | — | — |
| 1988 | 95° | 65° | 80° | — | — |
| 1987 | 88° | 64° | 76° | — | — |
| 1986 | 102° | 68° | 85° | — | — |
| 1985 | 92° | 62° | 77° | — | — |
| 1984 | 101° | 68° | 84° | — | — |
| 1983 | 92° | 60° | 76° | — | — |
| 1982 | 97° | 59° | 78° | — | — |
| 1981 | 88° | 63° | 75° | — | — |
| 1980 | 104° | 65° | 84° | — | — |
| 1979 | 88° | 57° | 72° | 0.81" | — |
| 1978 | 99° | 59° | 79° | — | — |
| 1977 | 91° | 54° | 72° | — | — |
| 1976 | 95° | 64° | 80° | — | — |
| 1975 | 86° | 55° | 71° | — | — |
| 1974coldest | 83° | 46° | 64° | — | — |
| 1973 | 101° | 69° | 85° | — | — |
| 1972 | 90° | 54° | 72° | — | — |
| 1971 | 94° | 51° | 72° | — | — |
55 years of data from BEARDSLEY