May is one of the warmer months of the year in Vernon, with average highs near 15.4°C and lows around 2.9°C (mean 9.2°C). It is about average for rainfall, averaging 52 mm of rainfall and 70% relative humidity across the period.
May is one of the warmer months of the year in Vernon. Across 45 years of records, the warmest May in Vernon was 2023 — when the month averaged 13.4°C — while the coldest was 1984 at 5.3°C. Typical May days reach 15.4°C with nights near 2.9°C. The long-term trend is warming, about 0.2°C per decade.
May is about average for rainfall in Vernon, averaging 52 mm of rainfall. The wettest May on record was 1990 with 101 mm, while the driest was 2007 at 20 mm.
Relative humidity in Vernon during May averages 70%. The most humid May was 2020 at 77%, and the least humid was 1992 at 60%.
May receives about 5.3 kWh/m²/day of solar energy in Vernon. The sunniest May was 2018 at 6.2 kWh/m²/day, and the cloudiest was 2022 at 4.5.
Average wind speed in Vernon during May is 0.2 m/s. The windiest Mays were 2006, 2015 and 2019, among others at 0.3 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 8.6°C | 9.5°C | 8.7°C | 9.8°C | 9.2°C | +0.6°C |
| Avg High | 15.0°C | 15.9°C | 14.8°C | 15.9°C | 15.2°C | +0.2°C |
| Avg Low | 2.2°C | 3.2°C | 2.5°C | 3.7°C | 3.1°C | +0.9°C |
| Avg Rain | 47 mm | 48 mm | 49 mm | 56 mm | 64 mm | +17 mm |
May temperatures in Vernon have risen by about 1.1°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -4.5°C (1985) to a record high of 30.2°C (1993).
Rainfall in May is about average for rainfall, averaging 52 mm, with a wettest year of 101 mm.
A good time to visit Vernon
May is a good time to visit Vernon, with days averaging 15.4°C and nights around 2.9°C (mean 9.2°C, warmer than Vernon's yearly average) and moderate rainfall. August and July are marginally more temperate, but May still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 15.4°C | 9.2°C | 2.9°C | 25.8°C | -0.3°C | 68 mm | 75% | 0.2 m/s | 5.3 |
| 2024 | 14.4°C | 8.2°C | 2.1°C | 24.8°C | -2.9°C | 47 mm | 74% | 0.2 m/s | 5.1 |
| 2023 🔥 | 19.5°C | 13.4°C | 7.2°C | 27.0°C | 2.6°C | 63 mm | 73% | 0.2 m/s | 5.8 |
| 2022 | 12.6°C | 7.0°C | 1.4°C | 19.7°C | -2.5°C | 69 mm | 75% | 0.2 m/s | 4.5 |
| 2021 | 14.6°C | 8.5°C | 2.4°C | 22.7°C | -3.4°C | 35 mm | 71% | 0.2 m/s | 5.5 |
| 2020 | 14.5°C | 8.6°C | 2.8°C | 23.0°C | -3.1°C | 101 mm | 77% | 0.2 m/s | 5.1 |
| 2019 | 17.7°C | 11.6°C | 5.5°C | 24.9°C | 0.4°C | 30 mm | 68% | 0.3 m/s | 5.5 |
| 2018 | 19.1°C | 12.7°C | 6.3°C | 27.6°C | 0.2°C | 35 mm | 71% | 0.2 m/s | 6.2 |
| 2017 | 16.2°C | 10.0°C | 3.7°C | 27.1°C | -2.4°C | 81 mm | 71% | 0.2 m/s | 5.5 |
| 2016 | 16.4°C | 10.6°C | 4.7°C | 23.7°C | 1.3°C | 67 mm | 70% | 0.2 m/s | 5.4 |
| 2015 | 17.3°C | 11.1°C | 4.8°C | 25.3°C | -1.7°C | 44 mm | 65% | 0.3 m/s | 6.1 |
| 2014 | 14.9°C | 9.2°C | 3.5°C | 22.0°C | -0.6°C | 53 mm | 72% | 0.2 m/s | 5.1 |
| 2013 | 16.5°C | 10.0°C | 3.6°C | 25.4°C | -3.9°C | 69 mm | 70% | 0.2 m/s | 5.6 |
| 2012 | 14.5°C | 8.1°C | 1.6°C | 23.4°C | -3.8°C | 31 mm | 67% | 0.2 m/s | 5.5 |
| 2011 | 13.3°C | 7.2°C | 1.1°C | 22.2°C | -3.1°C | 86 mm | 75% | 0.2 m/s | 5.1 |
| 2010 | 13.0°C | 7.4°C | 1.7°C | 21.4°C | -3.3°C | 64 mm | 70% | 0.2 m/s | 5 |
| 2009 | 14.4°C | 8.1°C | 1.8°C | 24.9°C | -3.3°C | 42 mm | 69% | 0.2 m/s | 5.7 |
| 2008 | 15.2°C | 9.0°C | 2.8°C | 25.9°C | -3.0°C | 48 mm | 73% | 0.2 m/s | 5.1 |
| 2007 | 15.7°C | 9.0°C | 2.3°C | 25.2°C | -2.8°C | 20 mm | 67% | 0.2 m/s | 6.1 |
| 2006 | 16.5°C | 9.9°C | 3.3°C | 29.8°C | -4.1°C | 55 mm | 67% | 0.3 m/s | 5.3 |
| 2005 | 16.4°C | 10.4°C | 4.5°C | 28.4°C | 0.2°C | 49 mm | 70% | 0.3 m/s | 5.4 |
| 2004 | 14.8°C | 9.3°C | 3.8°C | 22.9°C | 0.3°C | 58 mm | 70% | 0.2 m/s | 4.9 |
| 2003 | 13.5°C | 7.7°C | 1.9°C | 26.1°C | -3.2°C | 43 mm | 71% | 0.2 m/s | 4.9 |
| 2002 | 13.0°C | 7.1°C | 1.2°C | 19.9°C | -3.9°C | 72 mm | 71% | 0.2 m/s | 4.8 |
| 2001 | 15.8°C | 8.9°C | 2.0°C | 27.5°C | -3.6°C | 43 mm | 67% | 0.2 m/s | 5.3 |
| 2000 | 13.0°C | 7.2°C | 1.3°C | 19.3°C | -3.5°C | 62 mm | 72% | 0.2 m/s | 5.1 |
| 1999 | 12.8°C | 6.6°C | 0.3°C | 25.5°C | -3.6°C | 52 mm | 69% | 0.2 m/s | 5.4 |
| 1998 | 18.4°C | 11.7°C | 5.1°C | 23.5°C | 0.8°C | 32 mm | 69% | 0.2 m/s | 5.8 |
| 1997 | 15.8°C | 9.4°C | 3.1°C | 23.8°C | -2.9°C | 71 mm | 71% | 0.2 m/s | 5.5 |
| 1996 | 11.6°C | 6.4°C | 1.2°C | 19.6°C | -3.3°C | 58 mm | 75% | 0.2 m/s | 4.8 |
| 1995 | 17.2°C | 10.5°C | 3.7°C | 25.8°C | -1.3°C | 22 mm | 61% | 0.3 m/s | 6.1 |
| 1994 | 16.9°C | 10.2°C | 3.6°C | 23.7°C | -0.9°C | 30 mm | 66% | 0.2 m/s | 5.4 |
| 1993 | 20.1°C | 13.1°C | 6.0°C | 30.2°C | -1.6°C | 34 mm | 62% | 0.2 m/s | 5.7 |
| 1992 | 17.7°C | 10.5°C | 3.3°C | 28.1°C | -3.5°C | 30 mm | 60% | 0.3 m/s | 5.5 |
| 1991 | 14.4°C | 8.4°C | 2.5°C | 20.1°C | -1.1°C | 53 mm | 75% | 0.2 m/s | 5.2 |
| 1990 🌧️ | 13.9°C | 8.5°C | 3.0°C | 22.7°C | -1.2°C | 101 mm | 75% | 0.2 m/s | 5 |
| 1989 | 15.3°C | 8.9°C | 2.5°C | 22.0°C | -1.6°C | 71 mm | 69% | 0.2 m/s | 5.2 |
| 1988 | 15.6°C | 8.9°C | 2.3°C | 26.9°C | -3.5°C | 42 mm | 68% | 0.2 m/s | 5 |
| 1987 | 17.3°C | 10.3°C | 3.2°C | 25.8°C | -2.2°C | 29 mm | 61% | 0.2 m/s | 5.5 |
| 1986 | 14.8°C | 8.4°C | 2.0°C | 29.1°C | -4.1°C | 44 mm | 71% | 0.2 m/s | 5.2 |
| 1985 | 16.4°C | 9.8°C | 3.1°C | 25.2°C | -4.5°C | 49 mm | 69% | 0.2 m/s | 5.4 |
| 1984 ❄️ | 11.1°C | 5.3°C | -0.4°C | 19.8°C | -3.4°C | 58 mm | 76% | 0.2 m/s | 4.8 |
| 1983 | 17.1°C | 10.5°C | 3.8°C | 30.1°C | -1.3°C | 25 mm | 66% | 0.3 m/s | — |
| 1982 | 13.4°C | 7.0°C | 0.6°C | 22.5°C | -3.5°C | 37 mm | 72% | 0.2 m/s | — |
| 1981 | 14.3°C | 8.6°C | 2.9°C | 22.5°C | -2.2°C | 70 mm | 74% | 0.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 15.4°C with lows near 2.9°C (mean 9.2°C), based on 45 years of NASA POWER data.
May averages 52 mm of rainfall in Vernon, about average for rainfall. The wettest on record was 101 mm in 1990.
The hottest May reached 30.2°C in 1993. The coldest dipped to -4.5°C in 1985.
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 14.5°C to 15.3°C and overnight lows from 2°C to 3.2°C over the same span.
May is one of the warmer months of the year in Vernon and about average for rainfall, so plan for around 15.4°C daytime highs and 2.9°C at night.
Not quite — May is the 8th coolest month in Vernon, averaging 9.2°C.
For May in Vernon, pack warm layers and a jacket for chilly mornings, with typical highs of 15.4°C and lows of 2.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 70% — moderately humid.
Average wind speed in May is 0.2 m/s. The windiest May on record averaged 0.3 m/s (1983).
The wettest May on record was 1990 with 101 mm. On average, May sees 52 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 Vernon 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.
