August is one of the warmer months of the year in Stony Plain, with average highs near 22.4°C and lows around 10.4°C (mean 16.4°C). It is a relatively wet time of year, averaging 62 mm of rainfall and 68% relative humidity across the period.
August is one of the warmer months of the year in Stony Plain. Across 45 years of records, the warmest Augusts in Stony Plain were 1981 and 1998 — when the month averaged 18.9°C — while the coldest was 1987 at 13°C. Typical August days reach 22.4°C with nights near 10.4°C. The long-term trend is warming, about 0.3°C per decade.
August is a relatively wet time of year in Stony Plain, averaging 62 mm of rainfall. The wettest August on record was 1995 with 121 mm, while the driest was 1983 at 15 mm.
Relative humidity in Stony Plain during August averages 68%. The most humid August was 2019 at 80%, and the least humid was 1992 at 58%.
August receives about 4.9 kWh/m²/day of solar energy in Stony Plain. The sunniest August was 1986 at 5.7 kWh/m²/day, and the cloudiest were 1989 and 2019 at 4.2.
Average wind speed in Stony Plain during August is 2.3 m/s. The windiest August was 2020 at 2.8 m/s, while the calmest was 2013 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.7°C | 16.5°C | 16.2°C | 16.5°C | 17.5°C | +1.8°C |
| Avg High | 21.5°C | 22.6°C | 22.4°C | 22.3°C | 23.5°C | +2°C |
| Avg Low | 9.8°C | 10.5°C | 10.0°C | 10.6°C | 11.6°C | +1.8°C |
| Avg Rain | 61 mm | 72 mm | 55 mm | 56 mm | 66 mm | +5 mm |
August temperatures in Stony Plain have risen by about 1.5°C between 1981–1985 and 2021–2025.
August has ranged from a record low of -1.6°C (1992) to a record high of 34.3°C (2008).
Rainfall in August is a relatively wet time of year, averaging 62 mm, with a wettest year of 121 mm.
One of the best times to visit Stony Plain
August is one of the best times to visit Stony Plain. Expect days averaging 22.4°C and nights around 10.4°C (mean 16.4°C) — warmer than Stony Plain's yearly average — with moderate rainfall (62 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 | 23.6°C | 18.0°C | 12.5°C | 30.0°C | 7.4°C | 88 mm | 72% | 2.2 m/s | 5 |
| 2024 | 24.1°C | 17.8°C | 11.5°C | 28.2°C | 8.3°C | 75 mm | 66% | 2.5 m/s | 4.7 |
| 2023 | 23.4°C | 17.4°C | 11.5°C | 30.0°C | 5.9°C | 59 mm | 72% | 2.4 m/s | 4.7 |
| 2022 | 24.7°C | 18.8°C | 12.8°C | 29.8°C | 8.9°C | 63 mm | 70% | 2.3 m/s | 5.3 |
| 2021 | 23.4°C | 17.2°C | 11.1°C | 32.8°C | 5.6°C | 53 mm | 64% | 2.7 m/s | 4.6 |
| 2020 | 21.5°C | 15.9°C | 10.3°C | 29.4°C | 3.1°C | 55 mm | 74% | 2.8 m/s | 5.4 |
| 2019 | 19.4°C | 14.3°C | 9.3°C | 27.0°C | 5.0°C | 74 mm | 80% | 2.5 m/s | 4.2 |
| 2018 | 22.7°C | 16.6°C | 10.5°C | 32.7°C | 3.5°C | 67 mm | 69% | 2.3 m/s | 4.8 |
| 2017 | 22.4°C | 16.3°C | 10.1°C | 27.1°C | 7.1°C | 38 mm | 69% | 2.1 m/s | 5.2 |
| 2016 | 22.0°C | 16.5°C | 11.0°C | 26.8°C | 5.2°C | 74 mm | 73% | 2.5 m/s | 4.8 |
| 2015 | 24.2°C | 17.5°C | 10.8°C | 31.0°C | 2.8°C | 34 mm | 61% | 2.2 m/s | 4.9 |
| 2014 | 22.5°C | 17.0°C | 11.5°C | 29.1°C | 4.2°C | 67 mm | 72% | 2 m/s | 4.8 |
| 2013 | 23.3°C | 17.5°C | 11.8°C | 28.2°C | 7.4°C | 57 mm | 71% | 1.9 m/s | 4.9 |
| 2012 | 23.3°C | 17.3°C | 11.3°C | 29.1°C | 6.0°C | 79 mm | 69% | 2.1 m/s | 5.5 |
| 2011 | 22.6°C | 16.4°C | 10.1°C | 30.0°C | 5.4°C | 26 mm | 67% | 2.3 m/s | 5.4 |
| 2010 | 21.0°C | 15.5°C | 10.1°C | 27.9°C | 3.0°C | 48 mm | 70% | 2.4 m/s | 4.6 |
| 2009 | 23.6°C | 16.8°C | 10.0°C | 30.7°C | 6.4°C | 36 mm | 63% | 2.2 m/s | 4.9 |
| 2008 | 23.8°C | 17.5°C | 11.2°C | 34.3°C | 1.9°C | 39 mm | 63% | 2.6 m/s | 5.2 |
| 2007 | 20.2°C | 14.7°C | 9.3°C | 27.4°C | 2.9°C | 56 mm | 70% | 2.4 m/s | 4.4 |
| 2006 | 22.8°C | 16.4°C | 10.0°C | 29.9°C | 6.7°C | 85 mm | 65% | 2.2 m/s | 5.1 |
| 2005 | 20.2°C | 14.4°C | 8.5°C | 29.5°C | 3.8°C | 72 mm | 70% | 2.5 m/s | 4.7 |
| 2004 | 21.3°C | 15.6°C | 9.9°C | 30.2°C | 5.8°C | 54 mm | 70% | 2.1 m/s | 4.7 |
| 2003 | 24.9°C | 18.3°C | 11.7°C | 32.9°C | 5.9°C | 76 mm | 61% | 2.2 m/s | 5.3 |
| 2002 | 22.3°C | 15.8°C | 9.3°C | 31.3°C | 2.3°C | 40 mm | 62% | 2.5 m/s | 4.9 |
| 2001 | 24.7°C | 17.9°C | 11.1°C | 31.0°C | 7.7°C | 23 mm | 63% | 2.3 m/s | 5.6 |
| 2000 | 20.5°C | 14.9°C | 9.4°C | 27.4°C | 4.0°C | 66 mm | 72% | 2.5 m/s | 4.7 |
| 1999 | 23.6°C | 17.3°C | 11.0°C | 29.4°C | 6.0°C | 69 mm | 66% | 2.2 m/s | 4.8 |
| 1998 | 25.4°C | 18.9°C | 12.4°C | 34.2°C | 7.4°C | 50 mm | 59% | 2.2 m/s | 5.4 |
| 1997 | 22.5°C | 16.5°C | 10.4°C | 31.4°C | 6.6°C | 68 mm | 69% | 2.3 m/s | 5.1 |
| 1996 | 22.7°C | 16.5°C | 10.4°C | 29.8°C | 6.4°C | 66 mm | 69% | 2.6 m/s | 5.4 |
| 1995 🌧️ | 18.7°C | 13.4°C | 8.1°C | 29.8°C | 4.8°C | 121 mm | 73% | 2.4 m/s | 4.4 |
| 1994 | 22.0°C | 16.2°C | 10.4°C | 30.5°C | 4.3°C | 101 mm | 70% | 2.1 m/s | 4.5 |
| 1993 | 21.3°C | 15.4°C | 9.6°C | 28.6°C | 4.1°C | 59 mm | 68% | 2.2 m/s | 4.7 |
| 1992 | 22.3°C | 15.6°C | 8.8°C | 31.9°C | -1.6°C | 51 mm | 58% | 2.4 m/s | 5.3 |
| 1991 | 24.4°C | 18.5°C | 12.6°C | 31.5°C | 7.6°C | 76 mm | 69% | 2.1 m/s | 5.3 |
| 1990 | 22.7°C | 16.8°C | 10.9°C | 32.5°C | 2.2°C | 59 mm | 69% | 2.4 m/s | 5 |
| 1989 | 21.1°C | 16.0°C | 10.9°C | 30.1°C | 5.1°C | 72 mm | 76% | 2 m/s | 4.2 |
| 1988 | 20.8°C | 15.0°C | 9.3°C | 27.5°C | 4.8°C | 101 mm | 71% | 2.6 m/s | 4.8 |
| 1987 ❄️ | 18.0°C | 13.0°C | 8.0°C | 24.5°C | 3.0°C | 119 mm | 76% | 2.3 m/s | 4.5 |
| 1986 | 21.6°C | 15.5°C | 9.4°C | 26.7°C | 5.6°C | 30 mm | 70% | 2.2 m/s | 5.7 |
| 1985 | 20.9°C | 14.4°C | 7.8°C | 29.8°C | 3.2°C | 76 mm | 66% | 2.6 m/s | 4.8 |
| 1984 | 23.8°C | 17.5°C | 11.2°C | 30.3°C | 2.2°C | 35 mm | 62% | 2.5 m/s | 4.8 |
| 1983 | 23.5°C | 17.3°C | 11.2°C | 29.7°C | 4.2°C | 15 mm | 70% | 2 m/s | — |
| 1982 | 18.9°C | 13.5°C | 8.0°C | 25.8°C | 0.5°C | 65 mm | 74% | 2.5 m/s | — |
| 1981 🔥 | 25.3°C | 18.9°C | 12.4°C | 31.3°C | 5.8°C | 36 mm | 63% | 2.2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 22.4°C with lows near 10.4°C (mean 16.4°C), based on 45 years of NASA POWER data.
August averages 62 mm of rainfall in Stony Plain, a relatively wet time of year. The wettest on record was 121 mm in 1995.
The hottest August reached 34.3°C in 2008. The coldest dipped to -1.6°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.5°C. Daytime highs moved from 22.5°C to 23.8°C and overnight lows from 10.1°C to 11.9°C over the same span.
August is one of the warmer months of the year in Stony Plain and a relatively wet time of year, so plan for around 22.4°C daytime highs and 10.4°C at night.
Not quite — August is the 11th coolest month in Stony Plain, averaging 16.4°C.
For August in Stony Plain, pack light layers you can adjust through the day, with typical highs of 22.4°C and lows of 10.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 68% — moderately humid.
Average wind speed in August is 2.3 m/s. The windiest August on record averaged 2.8 m/s (2020).
The wettest August on record was 1995 with 121 mm. On average, August sees 62 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 Stony Plain behaves each August, 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 August specifically, along with year-by-year records and how the month has changed over the decades.
