May is one of the warmer months of the year in Prescott Valley, with average highs near 26°C and lows around 9.5°C (mean 17.8°C). It is one of the drier months, averaging 9 mm of rainfall and 33% relative humidity across the period.
May is one of the warmer months of the year in Prescott Valley. Across 45 years of records, the warmest May in Prescott Valley was 1984 — when the month averaged 21.1°C — while the coldest was 1995 at 13.9°C. Typical May days reach 26°C with nights near 9.5°C. The long-term trend is warming, about 0.2°C per decade.
May is one of the drier months in Prescott Valley, averaging 9 mm of rainfall. The wettest May on record was 1992 with 56 mm, while the driest were 2010, 2012 and 2022, among others at 0 mm.
Relative humidity in Prescott Valley during May averages 33%. The most humid May was 1992 at 55%, and the least humid was 2002 at 18%.
May receives about 7.9 kWh/m²/day of solar energy in Prescott Valley. The sunniest Mays were 2002, 2020 and 2022 at 8.6 kWh/m²/day, and the cloudiest was 1992 at 6.9.
Average wind speed in Prescott Valley during May is 2.2 m/s. The windiest Mays were 1991, 2011 and 2014 at 2.5 m/s, while the calmest were 1992 and 2009 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.5°C | 16.9°C | 19.1°C | 17.0°C | 18.9°C | +1.4°C |
| Avg High | 25.8°C | 24.8°C | 27.6°C | 25.1°C | 27.2°C | +1.4°C |
| Avg Low | 9.2°C | 9.0°C | 10.6°C | 8.8°C | 10.6°C | +1.4°C |
| Avg Rain | 10 mm | 13 mm | 6 mm | 10 mm | 6 mm | -4 mm |
May temperatures in Prescott Valley have risen by about 1.1°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -2.6°C (1988) to a record high of 37°C (2002).
Rainfall in May is one of the drier months, averaging 9 mm, with a wettest year of 56 mm.
One of the best times to visit Prescott Valley
May is one of the best times to visit Prescott Valley. Expect days averaging 26°C and nights around 9.5°C (mean 17.8°C) — warmer than Prescott Valley's yearly average — with low rainfall (9 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 26.6°C | 18.6°C | 10.6°C | 33.9°C | 3.7°C | 18 mm | 32% | 2.1 m/s | 7.6 |
| 2024 | 26.7°C | 18.4°C | 10.1°C | 33.0°C | 1.5°C | 0 mm | 31% | 2.1 m/s | 8.2 |
| 2023 | 25.4°C | 17.7°C | 10.0°C | 30.0°C | 4.2°C | 16 mm | 40% | 2.1 m/s | 7.9 |
| 2022 | 28.4°C | 19.5°C | 10.6°C | 33.8°C | 2.2°C | 0 mm | 21% | 2.4 m/s | 8.6 |
| 2021 | 27.9°C | 19.3°C | 10.8°C | 31.9°C | 2.6°C | 3 mm | 21% | 2.2 m/s | 8.4 |
| 2020 | 28.2°C | 19.7°C | 11.2°C | 35.8°C | 3.3°C | 1 mm | 34% | 2.2 m/s | 8.6 |
| 2019 | 21.6°C | 14.4°C | 7.2°C | 28.3°C | 2.4°C | 26 mm | 47% | 2.1 m/s | 7.2 |
| 2018 | 27.2°C | 19.0°C | 10.9°C | 34.2°C | 1.4°C | 7 mm | 26% | 2.3 m/s | 8.3 |
| 2017 | 25.8°C | 17.3°C | 8.9°C | 32.4°C | 2.4°C | 7 mm | 38% | 2.3 m/s | 8 |
| 2016 | 24.3°C | 16.5°C | 8.7°C | 31.8°C | 3.7°C | 15 mm | 37% | 2.1 m/s | 7.8 |
| 2015 | 22.4°C | 15.1°C | 7.7°C | 32.8°C | 2.6°C | 34 mm | 46% | 2.1 m/s | 7 |
| 2014 | 26.4°C | 18.0°C | 9.7°C | 34.5°C | 1.9°C | 0 mm | 24% | 2.5 m/s | 8 |
| 2013 | 27.0°C | 18.7°C | 10.4°C | 33.6°C | 5.4°C | 1 mm | 25% | 2.4 m/s | 8.1 |
| 2012 | 28.5°C | 19.6°C | 10.6°C | 36.2°C | 4.1°C | 0 mm | 21% | 2.3 m/s | 8.5 |
| 2011 | 24.1°C | 15.6°C | 7.1°C | 30.9°C | 0.5°C | 9 mm | 31% | 2.5 m/s | 8.2 |
| 2010 | 23.7°C | 15.3°C | 6.8°C | 29.4°C | 0.4°C | 0 mm | 34% | 2.4 m/s | 8.4 |
| 2009 | 28.7°C | 20.7°C | 12.7°C | 34.0°C | 8.9°C | 23 mm | 35% | 1.8 m/s | 7.4 |
| 2008 | 23.9°C | 15.6°C | 7.4°C | 35.4°C | 1.9°C | 20 mm | 35% | 2.3 m/s | 7.8 |
| 2007 | 27.5°C | 19.1°C | 10.8°C | 32.0°C | 2.0°C | 3 mm | 27% | 2.1 m/s | 8.1 |
| 2006 | 28.8°C | 20.0°C | 11.1°C | 34.1°C | 5.9°C | 3 mm | 22% | 2.1 m/s | 8.2 |
| 2005 | 25.8°C | 17.9°C | 10.0°C | 34.3°C | 1.4°C | 1 mm | 44% | 1.9 m/s | 8.2 |
| 2004 | 27.6°C | 19.3°C | 10.9°C | 33.4°C | 5.8°C | 0 mm | 25% | 2.3 m/s | 8.5 |
| 2003 | 26.8°C | 18.5°C | 10.1°C | 36.4°C | 0.5°C | 2 mm | 33% | 2 m/s | 7.9 |
| 2002 | 27.3°C | 18.5°C | 9.6°C | 37.0°C | 3.7°C | 0 mm | 18% | 2.2 m/s | 8.6 |
| 2001 | 29.6°C | 20.6°C | 11.6°C | 35.9°C | 1.3°C | 8 mm | 29% | 2.1 m/s | 8.2 |
| 2000 | 29.6°C | 20.6°C | 11.6°C | 36.5°C | 3.1°C | 0 mm | 22% | 2.3 m/s | 8.4 |
| 1999 | 25.8°C | 17.3°C | 8.7°C | 32.1°C | -0.2°C | 2 mm | 27% | 2.4 m/s | 8.1 |
| 1998 | 22.2°C | 14.9°C | 7.6°C | 27.5°C | 1.5°C | 15 mm | 44% | 2.3 m/s | 7.9 |
| 1997 | 29.5°C | 21.0°C | 12.6°C | 35.6°C | 4.7°C | 9 mm | 30% | 1.9 m/s | 7.8 |
| 1996 | 28.0°C | 19.6°C | 11.2°C | 35.4°C | 5.9°C | 1 mm | 21% | 2.4 m/s | 8.3 |
| 1995 ❄️ | 21.3°C | 13.9°C | 6.4°C | 29.9°C | -0.7°C | 9 mm | 48% | 2.2 m/s | 7.3 |
| 1994 | 24.5°C | 16.3°C | 8.2°C | 32.7°C | 2.8°C | 15 mm | 38% | 2.1 m/s | 7.3 |
| 1993 | 24.8°C | 17.0°C | 9.2°C | 29.3°C | 1.4°C | 15 mm | 48% | 2.1 m/s | 7.9 |
| 1992 🌧️ | 23.8°C | 17.3°C | 10.8°C | 29.3°C | 7.3°C | 56 mm | 55% | 1.8 m/s | 6.9 |
| 1991 | 23.2°C | 14.9°C | 6.7°C | 30.1°C | 0.9°C | 2 mm | 36% | 2.5 m/s | 8 |
| 1990 | 24.7°C | 16.4°C | 8.1°C | 29.6°C | 2.5°C | 10 mm | 33% | 2.4 m/s | 7.8 |
| 1989 | 27.1°C | 18.7°C | 10.2°C | 34.6°C | 3.2°C | 8 mm | 26% | 2.4 m/s | 7.8 |
| 1988 | 25.0°C | 16.6°C | 8.3°C | 31.1°C | -2.6°C | 1 mm | 34% | 2.3 m/s | 7.6 |
| 1987 | 24.0°C | 16.5°C | 9.0°C | 28.7°C | 1.8°C | 19 mm | 43% | 2 m/s | 7.3 |
| 1986 | 26.3°C | 17.7°C | 9.1°C | 33.2°C | 0.6°C | 10 mm | 30% | 2.2 m/s | 8 |
| 1985 | 25.8°C | 18.1°C | 10.4°C | 30.7°C | 4.7°C | 4 mm | 35% | 2.1 m/s | 7.7 |
| 1984 🔥 | 30.1°C | 21.1°C | 12.2°C | 36.2°C | 4.2°C | 3 mm | 26% | 2.2 m/s | 7.6 |
| 1983 | 24.8°C | 16.1°C | 7.5°C | 34.6°C | -0.4°C | 1 mm | 40% | 2.1 m/s | — |
| 1982 | 24.1°C | 16.0°C | 7.8°C | 29.9°C | 1.8°C | 34 mm | 41% | 2.1 m/s | — |
| 1981 | 24.7°C | 16.6°C | 8.4°C | 30.0°C | 2.9°C | 14 mm | 32% | 2.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 26°C with lows near 9.5°C (mean 17.8°C), based on 45 years of NASA POWER data.
May averages 9 mm of rainfall in Prescott Valley, one of the drier months. The wettest on record was 56 mm in 1992.
The hottest May reached 37°C in 2002. The coldest dipped to -2.6°C in 1988.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.1°C. Daytime highs moved from 25.9°C to 27°C and overnight lows from 9.3°C to 10.4°C over the same span.
May is one of the warmer months of the year in Prescott Valley and one of the drier months, so plan for around 26°C daytime highs and 9.5°C at night.
Not quite — May is the 8th coolest month in Prescott Valley, averaging 17.8°C.
For May in Prescott Valley, pack light layers you can adjust through the day, with typical highs of 26°C and lows of 9.5°C.
Relative humidity in May averages 33% — relatively dry.
Average wind speed in May is 2.2 m/s. The windiest May on record averaged 2.5 m/s (1991).
The wettest May on record was 1992 with 56 mm. On average, May sees 9 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Prescott Valley behaves each May, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for May specifically, along with year-by-year records and how the month has changed over the decades.
