Weather on May 18
Tempe, AZ
55 Years of Data
Avg High
93°F
Avg Low
62°F
Warmest
1997
90°F avg
Coldest
1987
39°F avg
About This Date
May 18th in Tempe, AZ typically brings hot spring weather, with average highs around 93°F and lows near 62°F — a 31°F daily swing. Over 55 years of records, the warmest May 18th was in 1997 (90°F average), while the coldest was 1987 (39°F) — a 51°F range across recorded history. Rain or other precipitation has occurred on about 4% of May 18th dates historically. The last decade has been 6.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 6.2°F cooler on this date compared to 20-30 years ago.
Planning for May 18th in Tempe, AZ? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 89° | 61° | 75° | — | — |
| 2024 | 102° | 69° | 86° | — | — |
| 2023 | 98° | — | — | — | — |
| 2022 | 99° | 60° | 79° | — | — |
| 2021 | 94° | 60° | 77° | — | — |
| 2020 | 100° | 61° | 80° | — | — |
| 2019 | 85° | 49° | 67° | — | — |
| 2018 | 92° | 57° | 74° | — | — |
| 2017 | 85° | 59° | 72° | — | — |
| 2016 | — | 65° | — | 0.15" | — |
| 2015 | 89° | 55° | 72° | — | — |
| 2014 | — | 57° | — | — | — |
| 2013 | 90° | 63° | 76° | — | — |
| 2012 | — | 58° | — | — | — |
| 2011 | 79° | 62° | 70° | 0.1" | — |
| 2010 | 92° | 56° | 74° | — | — |
| 2009 | 104° | 70° | 87° | — | — |
| 2008 | 105° | — | — | — | — |
| 2007 | 99° | 67° | 83° | — | — |
| 2006 | 105° | 67° | 86° | — | — |
| 2005 | 92° | 64° | 78° | — | — |
| 2004 | 96° | 66° | 81° | — | — |
| 2003 | 98° | 75° | 87° | — | — |
| 2002 | 101° | 65° | 83° | — | — |
| 2001 | 100° | 70° | 85° | — | — |
| 2000 | 90° | 60° | 75° | — | — |
| 1999 | 98° | 63° | 80° | — | — |
| 1998 | 96° | 62° | 79° | — | — |
| 1997warmest | 101° | 79° | 90° | — | — |
| 1996 | 102° | 69° | 86° | — | — |
| 1995 | 90° | 58° | 74° | — | — |
| 1994 | 89° | 58° | 73° | — | — |
| 1993 | 96° | 67° | 81° | — | — |
| 1992 | 100° | 66° | 83° | — | — |
| 1991 | 91° | 63° | 77° | — | — |
| 1990 | 95° | 68° | 82° | — | — |
| 1989 | 95° | 64° | 80° | — | — |
| 1988 | 89° | 66° | 78° | — | — |
| 1987coldest | 7° | 72° | 39° | — | — |
| 1986 | 96° | 64° | 80° | — | — |
| 1985 | 98° | 70° | 84° | — | — |
| 1984 | 97° | 66° | 81° | — | — |
| 1983 | 87° | 59° | 73° | — | — |
| 1982 | 97° | 66° | 81° | — | — |
| 1981 | 89° | 50° | 70° | — | — |
| 1980 | 94° | 52° | 73° | — | — |
| 1979 | 94° | 57° | 75° | — | — |
| 1978 | 97° | 53° | 75° | — | — |
| 1977 | 84° | 42° | 63° | — | — |
| 1976 | 103° | 67° | 85° | — | — |
| 1975 | 92° | 55° | 73° | — | — |
| 1974 | 94° | 51° | 72° | — | — |
| 1973 | 101° | 60° | 80° | — | — |
| 1972 | 100° | 54° | 77° | — | — |
| 1971 | 93° | 53° | 73° | — | — |
55 years of data from TEMPE ASU