May is one of the warmer months of the year in Apple Valley, with average highs near 27°C and lows around 9.7°C (mean 18.4°C). It is one of the drier months, averaging 5 mm of rainfall and 41% relative humidity across the period.
May is one of the warmer months of the year in Apple Valley. Across 45 years of records, the warmest May in Apple Valley was 1997 — when the month averaged 22.8°C — while the coldest was 1998 at 13.6°C. Typical May days reach 27°C with nights near 9.7°C. The long-term trend is warming, about 0.2°C per decade.
May is one of the drier months in Apple Valley, averaging 5 mm of rainfall. The wettest May on record was 1998 with 32 mm, while the driest were 2007, 2012 and 2022, among others at 0 mm.
Relative humidity in Apple Valley during May averages 41%. The most humid May was 1998 at 61%, and the least humid was 1984 at 27%.
May receives about 7.6 kWh/m²/day of solar energy in Apple Valley. The sunniest May was 2012 at 8.2 kWh/m²/day, and the cloudiest was 1984 at 6.7.
Average wind speed in Apple Valley during May is 3.3 m/s. The windiest May was 1990 at 4 m/s, while the calmest was 1992 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 18.1°C | 17.4°C | 19.9°C | 17.6°C | 19.1°C | +1°C |
| Avg High | 27.0°C | 25.9°C | 28.9°C | 25.9°C | 27.7°C | +0.7°C |
| Avg Low | 9.3°C | 8.9°C | 11.0°C | 9.2°C | 10.4°C | +1.1°C |
| Avg Rain | 5 mm | 7 mm | 2 mm | 5 mm | 4 mm | -1 mm |
May temperatures in Apple Valley have risen by about 0.8°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 0°C (1988) to a record high of 39.7°C (2003).
Rainfall in May is one of the drier months, averaging 5 mm, with a wettest year of 32 mm.
One of the best times to visit Apple Valley
May is one of the best times to visit Apple Valley. Expect days averaging 27°C and nights around 9.7°C (mean 18.4°C) — warmer than Apple Valley's yearly average — with low rainfall (5 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 | 27.8°C | 19.6°C | 11.4°C | 35.8°C | 5.1°C | 14 mm | 46% | 3.2 m/s | 7.5 |
| 2024 | 27.1°C | 18.2°C | 9.3°C | 34.6°C | 2.4°C | 1 mm | 47% | 3.4 m/s | 7.9 |
| 2023 | 25.8°C | 18.0°C | 10.2°C | 32.7°C | 3.1°C | 8 mm | 53% | 3.4 m/s | 7.4 |
| 2022 | 28.5°C | 19.4°C | 10.3°C | 36.1°C | 2.2°C | 0 mm | 33% | 3.4 m/s | 8.1 |
| 2021 | 28.6°C | 19.6°C | 10.5°C | 35.6°C | 3.9°C | 0 mm | 35% | 3.4 m/s | 8.1 |
| 2020 | 28.4°C | 19.6°C | 10.7°C | 37.7°C | 5.0°C | 0 mm | 41% | 3.1 m/s | 8.1 |
| 2019 | 22.2°C | 15.0°C | 7.8°C | 28.7°C | 3.6°C | 21 mm | 60% | 3.4 m/s | 6.9 |
| 2018 | 27.0°C | 18.7°C | 10.4°C | 36.3°C | 5.1°C | 7 mm | 48% | 3.4 m/s | 7.6 |
| 2017 | 26.8°C | 18.4°C | 10.1°C | 35.5°C | 2.5°C | 3 mm | 43% | 3.1 m/s | 7.7 |
| 2016 | 25.6°C | 17.5°C | 9.3°C | 34.2°C | 4.9°C | 4 mm | 49% | 3.3 m/s | 7.6 |
| 2015 | 24.9°C | 17.0°C | 9.2°C | 35.5°C | 3.5°C | 7 mm | 48% | 3.4 m/s | 7.3 |
| 2014 | 28.2°C | 19.5°C | 10.7°C | 36.2°C | 4.9°C | 1 mm | 31% | 3.7 m/s | 8 |
| 2013 | 27.8°C | 19.0°C | 10.3°C | 35.7°C | 6.5°C | 3 mm | 34% | 3.7 m/s | 7.8 |
| 2012 | 29.6°C | 19.9°C | 10.3°C | 36.7°C | 4.4°C | 0 mm | 30% | 3.2 m/s | 8.2 |
| 2011 | 23.7°C | 15.5°C | 7.3°C | 31.1°C | 2.2°C | 3 mm | 45% | 3.9 m/s | 7.9 |
| 2010 | 23.4°C | 15.1°C | 6.8°C | 31.5°C | 1.6°C | 1 mm | 44% | 3.4 m/s | 8 |
| 2009 | 31.3°C | 22.3°C | 13.2°C | 37.0°C | 9.2°C | 0 mm | 32% | 3 m/s | 7.7 |
| 2008 | 25.5°C | 17.0°C | 8.6°C | 37.7°C | 3.0°C | 5 mm | 40% | 3.2 m/s | 7.6 |
| 2007 | 29.1°C | 19.8°C | 10.5°C | 33.1°C | 2.9°C | 0 mm | 29% | 3 m/s | 8.1 |
| 2006 | 29.6°C | 20.7°C | 11.8°C | 34.9°C | 4.2°C | 2 mm | 37% | 2.8 m/s | 7.7 |
| 2005 | 27.4°C | 18.8°C | 10.3°C | 36.2°C | 4.3°C | 3 mm | 49% | 2.9 m/s | 7.8 |
| 2004 | 28.5°C | 19.6°C | 10.6°C | 36.5°C | 5.8°C | 0 mm | 35% | 3.4 m/s | 8.1 |
| 2003 | 27.8°C | 19.1°C | 10.5°C | 39.7°C | 1.5°C | 4 mm | 39% | 3.1 m/s | 7.6 |
| 2002 | 28.0°C | 18.6°C | 9.3°C | 37.7°C | 2.5°C | 0 mm | 34% | 3 m/s | 8 |
| 2001 | 31.7°C | 22.7°C | 13.6°C | 38.8°C | 6.5°C | 2 mm | 32% | 2.7 m/s | 7.9 |
| 2000 | 29.6°C | 20.4°C | 11.3°C | 37.6°C | 3.0°C | 3 mm | 36% | 3.5 m/s | 8 |
| 1999 | 26.5°C | 17.4°C | 8.2°C | 33.2°C | 2.6°C | 3 mm | 40% | 3.3 m/s | 7.4 |
| 1998 ❄️ 🌧️ | 21.0°C | 13.6°C | 6.1°C | 26.5°C | 2.8°C | 32 mm | 61% | 3.5 m/s | 7.2 |
| 1997 🔥 | 31.7°C | 22.8°C | 14.0°C | 37.9°C | 8.6°C | 4 mm | 32% | 2.7 m/s | 7.7 |
| 1996 | 27.6°C | 18.9°C | 10.1°C | 36.4°C | 6.2°C | 3 mm | 37% | 3.7 m/s | 7.9 |
| 1995 | 22.2°C | 14.7°C | 7.3°C | 30.5°C | 2.4°C | 5 mm | 58% | 3.5 m/s | 6.9 |
| 1994 | 26.2°C | 17.4°C | 8.7°C | 34.3°C | 3.5°C | 6 mm | 46% | 3 m/s | 7 |
| 1993 | 25.8°C | 17.6°C | 9.4°C | 30.4°C | 4.4°C | 2 mm | 51% | 3.1 m/s | 7.7 |
| 1992 | 28.1°C | 19.7°C | 11.4°C | 32.4°C | 6.8°C | 6 mm | 48% | 2.4 m/s | 7.2 |
| 1991 | 23.7°C | 15.1°C | 6.4°C | 31.1°C | 0.5°C | 1 mm | 45% | 3.6 m/s | 7.3 |
| 1990 | 25.8°C | 16.8°C | 7.8°C | 31.8°C | 4.5°C | 7 mm | 39% | 4 m/s | 7.7 |
| 1989 | 27.5°C | 18.5°C | 9.5°C | 35.1°C | 3.8°C | 4 mm | 35% | 3.4 m/s | 7.1 |
| 1988 | 26.1°C | 17.5°C | 8.8°C | 33.9°C | 0.0°C | 3 mm | 36% | 3.2 m/s | 7.4 |
| 1987 | 26.4°C | 18.3°C | 10.3°C | 31.3°C | 4.2°C | 11 mm | 41% | 2.9 m/s | 7 |
| 1986 | 27.1°C | 18.1°C | 9.1°C | 34.5°C | 1.8°C | 0 mm | 36% | 3.2 m/s | 7.7 |
| 1985 | 27.3°C | 18.1°C | 8.9°C | 32.5°C | 3.7°C | 1 mm | 34% | 3.3 m/s | 7.5 |
| 1984 | 31.3°C | 21.5°C | 11.8°C | 37.5°C | 4.0°C | 1 mm | 27% | 3.2 m/s | 6.7 |
| 1983 | 25.1°C | 16.7°C | 8.2°C | 35.0°C | 1.0°C | 1 mm | 48% | 3 m/s | — |
| 1982 | 25.5°C | 17.1°C | 8.6°C | 32.4°C | 3.0°C | 10 mm | 46% | 3 m/s | — |
| 1981 | 26.3°C | 17.5°C | 8.8°C | 32.1°C | 4.2°C | 12 mm | 38% | 3.3 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 27°C with lows near 9.7°C (mean 18.4°C), based on 45 years of NASA POWER data.
May averages 5 mm of rainfall in Apple Valley, one of the drier months. The wettest on record was 32 mm in 1998.
The hottest May reached 39.7°C in 2003. The coldest dipped to 0°C in 1988.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.8°C. Daytime highs moved from 27.1°C to 27.6°C and overnight lows from 9.3°C to 10.3°C over the same span.
May is one of the warmer months of the year in Apple Valley and one of the drier months, so plan for around 27°C daytime highs and 9.7°C at night.
Not quite — May is the 8th coolest month in Apple Valley, averaging 18.4°C.
For May in Apple Valley, pack light layers you can adjust through the day, with typical highs of 27°C and lows of 9.7°C.
Relative humidity in May averages 41% — relatively dry.
Average wind speed in May is 3.3 m/s. The windiest May on record averaged 4 m/s (1990).
The wettest May on record was 1998 with 32 mm. On average, May sees 5 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 Apple 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.
