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Tempe, AZ Weather on May 15
May 15th in Tempe, AZ typically brings hot spring weather, with average highs around 96°F and lows near 61°F — a 35°F daily swing. Over 55 years of records, the warmest May 15th was in 1997 (87°F average), while the coldest was 1977 (66°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 5% of May 15th dates historically, with the wettest May 15th recording 0.66" of rain. The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
What to Expect on May 15
Planning for May 15th in Tempe, AZ? Stay hydrated and seek shade during peak afternoon hours.
May 15 Weather Records for Tempe
- •The all-time record high for May 15th in Tempe, AZ is 107°F, set in 1976.
- •The coldest May 15th on record dropped to 45°F in 1977.
- •Temperatures have reached 90°F or higher on May 15th in 43 of the last 55 years.
Frequently Asked Questions
What was the warmest May 15 ever in Tempe?
The warmest May 15 in Tempe, AZ reached 107°F in 1976. That is 11°F above the long-term average high of 96°F.
What was the coldest May 15 ever in Tempe?
The coldest May 15 in Tempe, AZ dropped to 45°F in 1977. That is 16°F below the long-term average low of 61°F.
What is the average temperature on May 15 in Tempe?
On May 15, Tempe averages a high of 96°F and a low of 61°F based on 55 years of NOAA weather observations from TEMPE ASU.
How many years of weather data are available for May 15 in Tempe?
We have 55 years of weather records for May 15 in Tempe, AZ, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
May 15 Weather History in Tempe
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 90°F | 54°F | 0" | -- |
| 2024 | 98°F | 62°F | 0" | -- |
| 2023 | 104°F | 64°F | 0" | -- |
| 2022 | 105°F | 55°F | 0" | -- |
| 2021 | 98°F | 69°F | 0" | -- |
| 2020 | 93°F | 61°F | 0" | -- |
| 2019 | 97°F | -- | 0" | -- |
| 2018 | 94°F | 59°F | 0" | -- |
| 2017 | -- | 60°F | 0" | -- |
| 2016 | -- | 64°F | 0" | -- |
| 2015 | -- | 58°F | 0.66" | -- |
| 2014 | 97°F | 55°F | 0" | -- |
| 2013 | 100°F | 65°F | 0" | -- |
| 2012 | 103°F | 53°F | 0" | -- |
| 2011 | 94°F | 59°F | 0" | -- |
| 2010 | 93°F | 60°F | 0" | -- |
| 2009 | 99°F | 64°F | 0" | -- |
| 2008 | 93°F | 57°F | 0.05" | -- |
| 2007 | 100°F | 65°F | 0" | -- |
| 2006 | 104°F | 62°F | 0" | -- |
| 2005 | 98°F | 67°F | 0" | -- |
| 2004 | 100°F | 66°F | 0" | -- |
| 2003 | 88°F | 62°F | 0" | -- |
| 2002 | 99°F | 68°F | 0" | -- |
| 2001 | 99°F | 67°F | 0" | -- |
| 2000 | 96°F | 64°F | 0" | -- |
| 1999 | 89°F | 60°F | 0" | -- |
| 1998 | 83°F | 54°F | 0" | -- |
| 1997 | 100°F | 73°F | 0" | -- |
| 1996 | 98°F | 71°F | 0" | -- |
| 1995 | 87°F | 60°F | 0" | -- |
| 1994 | 100°F | 68°F | 0" | -- |
| 1993 | 97°F | 70°F | 0" | -- |
| 1992 | 98°F | 68°F | 0" | -- |
| 1991 | 87°F | 58°F | 0" | -- |
| 1990 | 90°F | 60°F | 0" | -- |
| 1989 | 83°F | 62°F | 0" | -- |
| 1988 | 102°F | 69°F | 0" | -- |
| 1987 | 97°F | 71°F | 0" | -- |
| 1986 | 93°F | 63°F | 0" | -- |
| 1985 | 97°F | 63°F | 0" | -- |
| 1984 | 96°F | 65°F | 0.08" | -- |
| 1983 | 89°F | 57°F | 0" | -- |
| 1982 | 90°F | 61°F | 0" | -- |
| 1981 | 97°F | 55°F | 0" | -- |
| 1980 | 86°F | 49°F | 0" | -- |
| 1979 | 103°F | 57°F | 0" | -- |
| 1978 | 101°F | 56°F | 0" | -- |
| 1977 | 88°F | 45°F | 0" | -- |
| 1976 | 107°F | 59°F | 0" | -- |
| 1975 | 102°F | 55°F | 0" | -- |
| 1974 | 95°F | 54°F | 0" | -- |
| 1973 | 97°F | 67°F | 0" | -- |
| 1972 | 101°F | 55°F | 0" | -- |
| 1971 | 99°F | 56°F | 0" | -- |
Based on 55 years of data from NOAA station: TEMPE ASU
Monthly Climate Averages
Historical temperature and precipitation averages for Tempe, AZ, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.