May is one of the warmer months of the year in Victorville, with average highs near 26.7°C and lows around 9.3°C (mean 18°C). It is one of the drier months, averaging 6 mm of rainfall and 46% relative humidity across the period.
May is one of the warmer months of the year in Victorville. Across 45 years of records, the warmest May in Victorville was 1997 — when the month averaged 22.5°C — while the coldest was 1998 at 12.9°C. Typical May days reach 26.7°C with nights near 9.3°C. The long-term trend is warming, about 0.2°C per decade.
May is one of the drier months in Victorville, averaging 6 mm of rainfall. The wettest May on record was 1998 with 60 mm, while the driest were 2004 and 2007 at 0 mm.
Relative humidity in Victorville during May averages 46%. The most humid May was 1998 at 69%, and the least humid was 1984 at 30%.
May receives about 7.6 kWh/m²/day of solar energy in Victorville. The sunniest May was 2012 at 8.2 kWh/m²/day, and the cloudiest was 1984 at 6.7.
Average wind speed in Victorville during May is 2.4 m/s. The windiest May was 1990 at 2.9 m/s, while the calmest was 1992 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.8°C | 17.1°C | 19.4°C | 17.3°C | 18.6°C | +0.8°C |
| Avg High | 26.8°C | 25.5°C | 28.4°C | 25.6°C | 27.4°C | +0.6°C |
| Avg Low | 8.9°C | 8.6°C | 10.3°C | 8.9°C | 9.9°C | +1°C |
| Avg Rain | 4 mm | 10 mm | 4 mm | 7 mm | 5 mm | +0 mm |
May temperatures in Victorville have risen by about 0.7°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 0°C (1991) to a record high of 39.6°C (2003).
Rainfall in May is one of the drier months, averaging 6 mm, with a wettest year of 60 mm.
One of the best times to visit Victorville
May is one of the best times to visit Victorville. Expect days averaging 26.7°C and nights around 9.3°C (mean 18°C) — warmer than Victorville's yearly average — with low rainfall (6 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 | 27.7°C | 19.4°C | 11.1°C | 37.0°C | 5.0°C | 10 mm | 50% | 2.4 m/s | 7.5 |
| 2024 | 26.6°C | 17.7°C | 8.8°C | 33.6°C | 1.8°C | 3 mm | 54% | 2.6 m/s | 7.9 |
| 2023 | 24.7°C | 17.4°C | 10.0°C | 32.9°C | 3.0°C | 12 mm | 61% | 2.6 m/s | 7.4 |
| 2022 | 28.3°C | 18.9°C | 9.6°C | 36.3°C | 1.2°C | 0 mm | 37% | 2.5 m/s | 8.1 |
| 2021 | 28.6°C | 19.3°C | 10.0°C | 36.4°C | 3.4°C | 1 mm | 39% | 2.5 m/s | 8.1 |
| 2020 | 28.2°C | 19.1°C | 10.0°C | 37.1°C | 5.1°C | 2 mm | 46% | 2.4 m/s | 8.1 |
| 2019 | 22.1°C | 14.9°C | 7.8°C | 28.3°C | 4.2°C | 29 mm | 64% | 2.5 m/s | 6.9 |
| 2018 | 26.4°C | 18.3°C | 10.2°C | 35.4°C | 5.7°C | 5 mm | 53% | 2.6 m/s | 7.6 |
| 2017 | 26.6°C | 18.1°C | 9.7°C | 35.5°C | 2.8°C | 6 mm | 47% | 2.4 m/s | 7.7 |
| 2016 | 25.4°C | 17.2°C | 9.1°C | 35.2°C | 5.2°C | 5 mm | 53% | 2.5 m/s | 7.6 |
| 2015 | 24.4°C | 16.7°C | 9.0°C | 35.2°C | 4.0°C | 12 mm | 53% | 2.7 m/s | 7.3 |
| 2014 | 28.3°C | 19.4°C | 10.6°C | 35.9°C | 4.7°C | 2 mm | 34% | 2.7 m/s | 8 |
| 2013 | 27.6°C | 18.8°C | 9.9°C | 35.9°C | 6.4°C | 6 mm | 38% | 2.8 m/s | 7.8 |
| 2012 | 29.3°C | 19.4°C | 9.5°C | 37.7°C | 4.0°C | 0 mm | 35% | 2.4 m/s | 8.2 |
| 2011 | 23.1°C | 15.0°C | 6.9°C | 31.3°C | 1.8°C | 7 mm | 50% | 2.8 m/s | 7.9 |
| 2010 | 23.2°C | 14.8°C | 6.4°C | 30.2°C | 1.5°C | 2 mm | 49% | 2.5 m/s | 8 |
| 2009 | 30.9°C | 21.5°C | 12.0°C | 36.9°C | 7.9°C | 0 mm | 39% | 2.3 m/s | 7.7 |
| 2008 | 25.3°C | 16.9°C | 8.5°C | 37.4°C | 2.2°C | 10 mm | 45% | 2.5 m/s | 7.6 |
| 2007 | 29.0°C | 19.5°C | 9.9°C | 32.9°C | 2.6°C | 0 mm | 33% | 2.4 m/s | 8.1 |
| 2006 | 29.0°C | 20.0°C | 11.0°C | 34.9°C | 4.2°C | 5 mm | 45% | 2.1 m/s | 7.7 |
| 2005 | 26.5°C | 18.1°C | 9.7°C | 35.2°C | 3.3°C | 7 mm | 57% | 2.2 m/s | 7.8 |
| 2004 | 28.2°C | 19.1°C | 10.1°C | 35.5°C | 4.9°C | 0 mm | 39% | 2.6 m/s | 8.1 |
| 2003 | 26.9°C | 18.3°C | 9.7°C | 39.6°C | 1.7°C | 12 mm | 46% | 2.3 m/s | 7.6 |
| 2002 | 27.9°C | 18.3°C | 8.7°C | 37.2°C | 2.6°C | 2 mm | 38% | 2.3 m/s | 8 |
| 2001 | 31.6°C | 22.3°C | 13.0°C | 39.1°C | 5.5°C | 1 mm | 38% | 2.1 m/s | 7.9 |
| 2000 | 28.8°C | 19.6°C | 10.5°C | 37.1°C | 2.4°C | 5 mm | 43% | 2.5 m/s | 8 |
| 1999 | 26.6°C | 17.2°C | 7.8°C | 33.4°C | 2.3°C | 3 mm | 44% | 2.5 m/s | 7.4 |
| 1998 ❄️ 🌧️ | 19.7°C | 12.9°C | 6.0°C | 25.3°C | 3.5°C | 60 mm | 69% | 2.6 m/s | 7.2 |
| 1997 🔥 | 31.7°C | 22.5°C | 13.2°C | 36.7°C | 7.4°C | 2 mm | 36% | 2.1 m/s | 7.7 |
| 1996 | 27.3°C | 18.3°C | 9.3°C | 35.3°C | 5.0°C | 1 mm | 43% | 2.6 m/s | 7.9 |
| 1995 | 21.7°C | 14.5°C | 7.3°C | 30.0°C | 2.5°C | 6 mm | 63% | 2.6 m/s | 6.9 |
| 1994 | 25.8°C | 17.2°C | 8.6°C | 33.7°C | 4.6°C | 8 mm | 51% | 2.3 m/s | 7 |
| 1993 | 25.1°C | 17.1°C | 9.1°C | 30.0°C | 5.3°C | 1 mm | 56% | 2.4 m/s | 7.7 |
| 1992 | 28.1°C | 19.6°C | 11.1°C | 32.8°C | 6.4°C | 5 mm | 53% | 1.9 m/s | 7.2 |
| 1991 | 23.6°C | 14.9°C | 6.3°C | 31.1°C | 0.0°C | 1 mm | 49% | 2.6 m/s | 7.3 |
| 1990 | 25.6°C | 16.6°C | 7.5°C | 32.9°C | 4.6°C | 14 mm | 43% | 2.9 m/s | 7.7 |
| 1989 | 27.1°C | 18.0°C | 8.9°C | 34.3°C | 4.3°C | 6 mm | 40% | 2.5 m/s | 7.1 |
| 1988 | 26.1°C | 17.2°C | 8.4°C | 33.7°C | 0.2°C | 4 mm | 41% | 2.4 m/s | 7.4 |
| 1987 | 26.6°C | 18.4°C | 10.3°C | 32.2°C | 4.9°C | 10 mm | 44% | 2.2 m/s | 7 |
| 1986 | 26.9°C | 17.9°C | 8.9°C | 34.0°C | 2.1°C | 0 mm | 40% | 2.4 m/s | 7.7 |
| 1985 | 26.8°C | 17.5°C | 8.2°C | 32.1°C | 3.4°C | 2 mm | 40% | 2.5 m/s | 7.5 |
| 1984 | 31.1°C | 21.2°C | 11.2°C | 37.7°C | 3.1°C | 0 mm | 30% | 2.5 m/s | 6.7 |
| 1983 | 24.6°C | 16.0°C | 7.4°C | 34.4°C | 1.3°C | 2 mm | 56% | 2.2 m/s | — |
| 1982 | 25.5°C | 17.0°C | 8.5°C | 33.2°C | 2.7°C | 8 mm | 51% | 2.3 m/s | — |
| 1981 | 26.2°C | 17.4°C | 8.5°C | 32.3°C | 3.1°C | 6 mm | 43% | 2.4 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 26.7°C with lows near 9.3°C (mean 18°C), based on 45 years of NASA POWER data.
May averages 6 mm of rainfall in Victorville, one of the drier months. The wettest on record was 60 mm in 1998.
The hottest May reached 39.6°C in 2003. The coldest dipped to 0°C in 1991.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.7°C. Daytime highs moved from 26.8°C to 27.2°C and overnight lows from 8.8°C to 9.9°C over the same span.
May is one of the warmer months of the year in Victorville and one of the drier months, so plan for around 26.7°C daytime highs and 9.3°C at night.
Not quite — May is the 8th coolest month in Victorville, averaging 18°C.
For May in Victorville, pack light layers you can adjust through the day, with typical highs of 26.7°C and lows of 9.3°C.
Relative humidity in May averages 46% — relatively dry.
Average wind speed in May is 2.4 m/s. The windiest May on record averaged 2.9 m/s (1990).
The wettest May on record was 1998 with 60 mm. On average, May sees 6 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 Victorville 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.
