May is one of the warmer months of the year in Chestermere, with average highs near 16.7°C and lows around 3.6°C (mean 10.2°C). It is a relatively wet time of year, averaging 65 mm of rainfall and 61% relative humidity across the period.
May is one of the warmer months of the year in Chestermere. Across 45 years of records, the warmest May in Chestermere was 2023 — when the month averaged 15°C — while the coldest was 1996 at 6.7°C. Typical May days reach 16.7°C with nights near 3.6°C. The long-term May temperature trend is broadly flat.
May is a relatively wet time of year in Chestermere, averaging 65 mm of rainfall. The wettest May on record was 1981 with 133 mm, while the driest was 1987 at 16 mm.
Relative humidity in Chestermere during May averages 61%. The most humid May was 1981 at 70%, and the least humid was 1988 at 47%.
May receives about 5.7 kWh/m²/day of solar energy in Chestermere. The sunniest Mays were 1998, 2005 and 2015 at 6.4 kWh/m²/day, and the cloudiest were 1996 and 2010 at 5.1.
Average wind speed in Chestermere during May is 2.5 m/s. The windiest May was 2001 at 3 m/s, while the calmest was 2014 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.4°C | 10.0°C | 9.7°C | 10.1°C | 10.8°C | +0.4°C |
| Avg High | 17.1°C | 16.5°C | 16.2°C | 16.6°C | 17.3°C | +0.2°C |
| Avg Low | 3.7°C | 3.5°C | 3.2°C | 3.7°C | 4.2°C | +0.5°C |
| Avg Rain | 55 mm | 77 mm | 60 mm | 66 mm | 65 mm | +10 mm |
May temperatures in Chestermere have risen by about 1.5°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -6.3°C (1996) to a record high of 33.1°C (1986).
Rainfall in May is a relatively wet time of year, averaging 65 mm, with a wettest year of 133 mm.
A good time to visit Chestermere
May is a good time to visit Chestermere, with days averaging 16.7°C and nights around 3.6°C (mean 10.2°C, warmer than Chestermere's yearly average) and moderate rainfall. July and August 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 | 19.5°C | 12.3°C | 5.1°C | 30.2°C | -0.1°C | 65 mm | 61% | 2.4 m/s | 6 |
| 2024 | 15.1°C | 9.2°C | 3.3°C | 25.8°C | -3.0°C | 86 mm | 66% | 2.6 m/s | 5.2 |
| 2023 🔥 | 22.4°C | 15.0°C | 7.6°C | 28.8°C | 2.7°C | 22 mm | 57% | 2.1 m/s | 6.3 |
| 2022 | 15.6°C | 9.2°C | 2.8°C | 22.2°C | -1.2°C | 44 mm | 58% | 2.4 m/s | 5.7 |
| 2021 | 15.5°C | 9.3°C | 3.1°C | 27.3°C | -2.6°C | 64 mm | 63% | 2.5 m/s | 5.6 |
| 2020 | 16.0°C | 9.5°C | 3.1°C | 24.1°C | -4.1°C | 112 mm | 64% | 2.4 m/s | 5.5 |
| 2019 | 15.3°C | 9.2°C | 3.0°C | 25.8°C | -3.5°C | 55 mm | 65% | 2.2 m/s | 5.4 |
| 2018 | 20.5°C | 13.7°C | 6.9°C | 28.5°C | 0.4°C | 47 mm | 61% | 2.5 m/s | 6.3 |
| 2017 | 18.6°C | 11.9°C | 5.2°C | 27.5°C | -0.7°C | 61 mm | 61% | 2.5 m/s | 6 |
| 2016 | 17.5°C | 10.8°C | 4.2°C | 27.5°C | -1.8°C | 72 mm | 58% | 2.6 m/s | 6 |
| 2015 | 16.6°C | 9.7°C | 2.9°C | 25.0°C | -3.2°C | 29 mm | 58% | 2.3 m/s | 6.4 |
| 2014 | 15.1°C | 8.9°C | 2.7°C | 24.5°C | -4.6°C | 73 mm | 65% | 2 m/s | 5.4 |
| 2013 | 17.5°C | 11.2°C | 4.9°C | 26.3°C | -5.6°C | 115 mm | 62% | 2.3 m/s | 5.6 |
| 2012 | 16.2°C | 9.6°C | 3.1°C | 27.3°C | -1.4°C | 53 mm | 58% | 2.5 m/s | 5.7 |
| 2011 | 15.1°C | 8.8°C | 2.5°C | 22.0°C | -2.0°C | 97 mm | 65% | 2.5 m/s | 5.6 |
| 2010 | 13.5°C | 7.6°C | 1.7°C | 26.8°C | -4.3°C | 60 mm | 61% | 2.6 m/s | 5.1 |
| 2009 | 16.3°C | 9.5°C | 2.7°C | 26.2°C | -4.1°C | 37 mm | 58% | 2.5 m/s | 6.1 |
| 2008 | 16.1°C | 10.0°C | 3.9°C | 27.7°C | -2.2°C | 127 mm | 68% | 2.5 m/s | 5.5 |
| 2007 | 16.6°C | 10.1°C | 3.6°C | 24.5°C | -0.3°C | 117 mm | 66% | 2.5 m/s | 5.6 |
| 2006 | 18.0°C | 11.5°C | 5.0°C | 29.2°C | -2.9°C | 40 mm | 60% | 2.4 m/s | 6 |
| 2005 | 17.6°C | 10.6°C | 3.6°C | 23.2°C | -5.2°C | 34 mm | 59% | 2.6 m/s | 6.4 |
| 2004 | 14.1°C | 8.1°C | 2.1°C | 22.8°C | -4.9°C | 80 mm | 65% | 2.2 m/s | 5.3 |
| 2003 | 14.7°C | 8.7°C | 2.8°C | 27.1°C | -3.3°C | 52 mm | 65% | 2.4 m/s | 5.5 |
| 2002 | 13.7°C | 7.1°C | 0.6°C | 23.6°C | -5.7°C | 64 mm | 62% | 2.7 m/s | 5.4 |
| 2001 | 19.1°C | 12.0°C | 4.9°C | 30.2°C | -1.3°C | 22 mm | 47% | 3 m/s | 6.1 |
| 2000 | 16.0°C | 9.4°C | 2.8°C | 22.7°C | -1.6°C | 32 mm | 56% | 2.3 m/s | 5.8 |
| 1999 | 15.5°C | 9.3°C | 3.1°C | 27.6°C | -4.4°C | 63 mm | 58% | 2.6 m/s | 5.7 |
| 1998 | 19.9°C | 13.0°C | 6.0°C | 25.7°C | 1.5°C | 74 mm | 57% | 2.5 m/s | 6.4 |
| 1997 | 16.1°C | 9.5°C | 2.9°C | 25.9°C | -3.9°C | 108 mm | 64% | 2.6 m/s | 5.5 |
| 1996 ❄️ | 12.5°C | 6.7°C | 0.9°C | 21.9°C | -6.3°C | 66 mm | 68% | 2.2 m/s | 5.1 |
| 1995 | 16.3°C | 9.5°C | 2.8°C | 28.9°C | -2.7°C | 81 mm | 62% | 2.2 m/s | 5.7 |
| 1994 | 17.6°C | 11.0°C | 4.3°C | 27.2°C | -0.8°C | 70 mm | 62% | 2.3 m/s | 5.2 |
| 1993 | 18.5°C | 11.7°C | 4.9°C | 28.4°C | -2.0°C | 64 mm | 61% | 2.5 m/s | 5.5 |
| 1992 | 17.6°C | 10.4°C | 3.2°C | 28.6°C | -4.9°C | 56 mm | 57% | 2.5 m/s | 5.4 |
| 1991 | 15.5°C | 9.4°C | 3.3°C | 24.4°C | -3.3°C | 89 mm | 64% | 2.2 m/s | 5.3 |
| 1990 | 15.8°C | 9.6°C | 3.4°C | 26.5°C | -2.1°C | 99 mm | 65% | 2.4 m/s | 5.3 |
| 1989 | 16.7°C | 10.0°C | 3.2°C | 25.1°C | -1.9°C | 41 mm | 55% | 2.6 m/s | 5.6 |
| 1988 | 20.0°C | 12.8°C | 5.6°C | 29.6°C | -1.7°C | 23 mm | 47% | 2.8 m/s | 5.5 |
| 1987 | 19.7°C | 12.2°C | 4.8°C | 28.1°C | -3.4°C | 16 mm | 53% | 2.5 m/s | 5.9 |
| 1986 | 17.6°C | 10.9°C | 4.3°C | 33.1°C | -5.2°C | 66 mm | 63% | 2.5 m/s | 5.6 |
| 1985 | 18.4°C | 11.5°C | 4.7°C | 27.0°C | -0.9°C | 52 mm | 58% | 2.4 m/s | 6 |
| 1984 | 14.5°C | 8.3°C | 2.0°C | 25.6°C | -2.6°C | 62 mm | 61% | 2.7 m/s | 5.2 |
| 1983 | 16.4°C | 9.6°C | 2.9°C | 26.3°C | -3.0°C | 26 mm | 64% | 2.5 m/s | — |
| 1982 | 15.1°C | 8.4°C | 1.8°C | 25.0°C | -4.2°C | 77 mm | 62% | 2.7 m/s | — |
| 1981 🌧️ | 15.5°C | 9.9°C | 4.2°C | 23.3°C | 0.1°C | 133 mm | 70% | 2.5 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 16.7°C with lows near 3.6°C (mean 10.2°C), based on 45 years of NASA POWER data.
May averages 65 mm of rainfall in Chestermere, a relatively wet time of year. The wettest on record was 133 mm in 1981.
The hottest May reached 33.1°C in 1986. The coldest dipped to -6.3°C in 1996.
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 16°C to 17.6°C and overnight lows from 3.1°C to 4.4°C over the same span.
May is one of the warmer months of the year in Chestermere and a relatively wet time of year, so plan for around 16.7°C daytime highs and 3.6°C at night.
Not quite — May is the 8th coolest month in Chestermere, averaging 10.2°C.
For May in Chestermere, pack warm layers and a jacket for chilly mornings, with typical highs of 16.7°C and lows of 3.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 61% — moderately humid.
Average wind speed in May is 2.5 m/s. The windiest May on record averaged 3 m/s (2001).
The wettest May on record was 1981 with 133 mm. On average, May sees 65 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 Chestermere 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.
