May is one of the warmer months of the year in Whitecourt, with average highs near 15.6°C and lows around 2.9°C (mean 9.3°C). It is a relatively wet time of year, averaging 67 mm of rainfall and 69% relative humidity across the period.
May is one of the warmer months of the year in Whitecourt. Across 45 years of records, the warmest May in Whitecourt was 2023 — when the month averaged 14.2°C — while the coldest was 1996 at 5.8°C. Typical May days reach 15.6°C with nights near 2.9°C. The long-term trend is warming, about 0.2°C per decade.
May is a relatively wet time of year in Whitecourt, averaging 67 mm of rainfall. The wettest May on record was 2020 with 122 mm, while the driest was 2015 at 21 mm.
Relative humidity in Whitecourt during May averages 69%. The most humid May was 1996 at 79%, and the least humid was 1988 at 58%.
May receives about 5.5 kWh/m²/day of solar energy in Whitecourt. The sunniest May was 2015 at 6.4 kWh/m²/day, and the cloudiest were 1984 and 1996 at 4.7.
Average wind speed in Whitecourt during May is 0.9 m/s. The windiest May was 2001 at 1.2 m/s, while the calmest were 1996, 2014 and 2023, among others at 0.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 9.2°C | 9.2°C | 8.5°C | 9.6°C | 9.9°C | +0.7°C |
| Avg High | 15.6°C | 15.4°C | 14.8°C | 16.1°C | 16.2°C | +0.6°C |
| Avg Low | 2.9°C | 2.9°C | 2.3°C | 3.2°C | 3.5°C | +0.6°C |
| Avg Rain | 70 mm | 65 mm | 67 mm | 59 mm | 76 mm | +7 mm |
May temperatures in Whitecourt have risen by about 1.5°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -6.8°C (2002) to a record high of 30.8°C (2025).
Rainfall in May is a relatively wet time of year, averaging 67 mm, with a wettest year of 122 mm.
A good time to visit Whitecourt
May is a good time to visit Whitecourt, with days averaging 15.6°C and nights around 2.9°C (mean 9.3°C, warmer than Whitecourt'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 | 18.5°C | 11.6°C | 4.7°C | 30.8°C | -0.4°C | 58 mm | 66% | 0.9 m/s | 5.7 |
| 2024 | 15.1°C | 8.9°C | 2.8°C | 26.2°C | -3.0°C | 55 mm | 68% | 1 m/s | 5.1 |
| 2023 🔥 | 21.3°C | 14.2°C | 7.0°C | 28.6°C | 2.4°C | 95 mm | 67% | 0.8 m/s | 5.5 |
| 2022 | 13.7°C | 7.9°C | 2.1°C | 19.2°C | -3.6°C | 54 mm | 71% | 0.9 m/s | 5.1 |
| 2021 | 15.0°C | 8.7°C | 2.4°C | 23.7°C | -3.5°C | 75 mm | 70% | 0.9 m/s | 5.2 |
| 2020 🌧️ | 13.9°C | 8.1°C | 2.3°C | 22.4°C | -3.7°C | 122 mm | 76% | 1 m/s | 5.3 |
| 2019 | 15.4°C | 9.0°C | 2.5°C | 27.5°C | -3.9°C | 33 mm | 67% | 0.9 m/s | 5.8 |
| 2018 | 19.5°C | 12.6°C | 5.7°C | 27.4°C | 0.7°C | 51 mm | 67% | 0.9 m/s | 6.2 |
| 2017 | 17.0°C | 10.7°C | 4.3°C | 24.3°C | -1.4°C | 49 mm | 74% | 0.9 m/s | 5.7 |
| 2016 | 17.2°C | 10.3°C | 3.4°C | 29.0°C | -1.7°C | 120 mm | 62% | 1 m/s | 5.7 |
| 2015 | 16.4°C | 9.3°C | 2.3°C | 25.8°C | -2.9°C | 21 mm | 62% | 1 m/s | 6.4 |
| 2014 | 13.6°C | 7.9°C | 2.1°C | 22.0°C | -4.6°C | 56 mm | 71% | 0.8 m/s | 5.3 |
| 2013 | 17.8°C | 11.2°C | 4.7°C | 27.2°C | -3.8°C | 57 mm | 69% | 0.9 m/s | 5.8 |
| 2012 | 15.0°C | 8.5°C | 2.1°C | 23.1°C | -2.7°C | 59 mm | 63% | 1 m/s | 5.7 |
| 2011 | 15.6°C | 9.5°C | 3.4°C | 21.2°C | -2.2°C | 40 mm | 68% | 1 m/s | 5.7 |
| 2010 | 13.1°C | 7.3°C | 1.6°C | 24.8°C | -5.6°C | 105 mm | 66% | 0.9 m/s | 4.8 |
| 2009 | 13.8°C | 7.3°C | 0.8°C | 23.7°C | -5.2°C | 45 mm | 67% | 1 m/s | 5.7 |
| 2008 | 16.1°C | 10.0°C | 3.9°C | 27.3°C | -1.6°C | 56 mm | 70% | 1 m/s | 5.7 |
| 2007 | 14.3°C | 8.4°C | 2.5°C | 23.3°C | -2.4°C | 96 mm | 75% | 0.9 m/s | 5.1 |
| 2006 | 17.5°C | 10.7°C | 4.0°C | 29.0°C | -3.3°C | 92 mm | 65% | 1 m/s | 5.4 |
| 2005 | 15.8°C | 9.3°C | 2.8°C | 23.6°C | -5.3°C | 85 mm | 70% | 0.9 m/s | 5.9 |
| 2004 | 13.6°C | 7.4°C | 1.2°C | 23.5°C | -5.2°C | 43 mm | 65% | 0.9 m/s | 5 |
| 2003 | 13.5°C | 7.8°C | 2.1°C | 25.2°C | -4.3°C | 80 mm | 72% | 0.9 m/s | 5.3 |
| 2002 | 12.9°C | 6.9°C | 0.8°C | 22.0°C | -6.8°C | 44 mm | 67% | 1 m/s | 5.5 |
| 2001 | 16.9°C | 10.3°C | 3.7°C | 26.5°C | -1.7°C | 47 mm | 59% | 1.2 m/s | 5.6 |
| 2000 | 13.3°C | 7.3°C | 1.4°C | 18.6°C | -2.2°C | 76 mm | 66% | 0.9 m/s | 4.9 |
| 1999 | 13.5°C | 7.6°C | 1.7°C | 26.7°C | -3.7°C | 63 mm | 69% | 1 m/s | 5 |
| 1998 | 20.6°C | 13.5°C | 6.3°C | 25.5°C | 1.0°C | 38 mm | 58% | 0.9 m/s | 6 |
| 1997 | 14.2°C | 8.4°C | 2.6°C | 25.0°C | -3.3°C | 64 mm | 76% | 0.9 m/s | 5.1 |
| 1996 ❄️ | 10.6°C | 5.8°C | 1.0°C | 18.8°C | -6.7°C | 110 mm | 79% | 0.8 m/s | 4.7 |
| 1995 | 16.4°C | 9.3°C | 2.2°C | 28.2°C | -4.7°C | 35 mm | 66% | 0.8 m/s | 5.9 |
| 1994 | 16.4°C | 10.0°C | 3.5°C | 24.8°C | 0.9°C | 53 mm | 65% | 1 m/s | 5.1 |
| 1993 | 17.9°C | 10.9°C | 3.9°C | 28.8°C | -0.5°C | 61 mm | 66% | 1 m/s | 5.6 |
| 1992 | 14.4°C | 8.3°C | 2.2°C | 25.1°C | -3.1°C | 61 mm | 69% | 0.9 m/s | 5.5 |
| 1991 | 15.1°C | 9.1°C | 3.0°C | 23.0°C | -4.4°C | 103 mm | 74% | 0.9 m/s | 5.6 |
| 1990 | 15.0°C | 9.0°C | 2.9°C | 23.0°C | -3.2°C | 62 mm | 72% | 0.9 m/s | 5.5 |
| 1989 | 15.3°C | 9.0°C | 2.6°C | 23.9°C | -2.6°C | 86 mm | 68% | 0.9 m/s | 5.6 |
| 1988 | 18.5°C | 11.3°C | 4.1°C | 26.4°C | -3.0°C | 41 mm | 58% | 0.9 m/s | 5.5 |
| 1987 | 16.7°C | 9.8°C | 2.8°C | 25.9°C | -3.1°C | 72 mm | 67% | 0.8 m/s | 5.7 |
| 1986 | 15.3°C | 9.1°C | 2.9°C | 27.4°C | -5.2°C | 70 mm | 75% | 0.9 m/s | 5.5 |
| 1985 | 17.0°C | 10.2°C | 3.3°C | 26.8°C | -3.0°C | 50 mm | 67% | 0.9 m/s | 6.1 |
| 1984 | 12.3°C | 7.0°C | 1.8°C | 21.0°C | -3.3°C | 116 mm | 74% | 1 m/s | 4.7 |
| 1983 | 15.1°C | 8.8°C | 2.5°C | 26.1°C | -3.5°C | 39 mm | 72% | 0.9 m/s | — |
| 1982 | 14.1°C | 7.9°C | 1.7°C | 21.7°C | -2.8°C | 63 mm | 71% | 1 m/s | — |
| 1981 | 15.7°C | 9.9°C | 4.1°C | 22.4°C | -2.8°C | 92 mm | 75% | 1 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 15.6°C with lows near 2.9°C (mean 9.3°C), based on 45 years of NASA POWER data.
May averages 67 mm of rainfall in Whitecourt, a relatively wet time of year. The wettest on record was 122 mm in 2020.
The hottest May reached 30.8°C in 2025. The coldest dipped to -6.8°C in 2002.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.5°C. Daytime highs moved from 14.8°C to 16.7°C and overnight lows from 2.7°C to 3.8°C over the same span.
May is one of the warmer months of the year in Whitecourt and a relatively wet time of year, so plan for around 15.6°C daytime highs and 2.9°C at night.
Not quite — May is the 8th coolest month in Whitecourt, averaging 9.3°C.
For May in Whitecourt, pack warm layers and a jacket for chilly mornings, with typical highs of 15.6°C and lows of 2.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 69% — moderately humid.
Average wind speed in May is 0.9 m/s. The windiest May on record averaged 1.2 m/s (2001).
The wettest May on record was 2020 with 122 mm. On average, May sees 67 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 Whitecourt 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.
