August is one of the warmer months of the year in Red Deer, with average highs near 22.3°C and lows around 10.1°C (mean 16.2°C). It is a relatively wet time of year, averaging 66 mm of rainfall and 68% relative humidity across the period.
August is one of the warmer months of the year in Red Deer. Across 45 years of records, the warmest August in Red Deer was 2022 — when the month averaged 19.4°C — while the coldest was 1987 at 13°C. Typical August days reach 22.3°C with nights near 10.1°C. The long-term trend is warming, about 0.4°C per decade.
August is a relatively wet time of year in Red Deer, averaging 66 mm of rainfall. The wettest August on record was 1991 with 119 mm, while the driest was 2001 at 19 mm.
Relative humidity in Red Deer during August averages 68%. The most humid Augusts were 1982 and 2019 at 76%, and the least humid was 2001 at 57%.
August receives about 5.1 kWh/m²/day of solar energy in Red Deer. The sunniest August was 2001 at 6 kWh/m²/day, and the cloudiest were 1989, 1994 and 1995, among others at 4.6.
Average wind speed in Red Deer during August is 2.2 m/s. The windiest Augusts were 1988 and 1996 at 2.5 m/s, while the calmest was 2013 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.5°C | 16.2°C | 15.8°C | 16.4°C | 17.7°C | +2.2°C |
| Avg High | 21.5°C | 22.3°C | 22.0°C | 22.5°C | 23.8°C | +2.3°C |
| Avg Low | 9.5°C | 10.1°C | 9.6°C | 10.4°C | 11.6°C | +2.1°C |
| Avg Rain | 68 mm | 73 mm | 70 mm | 54 mm | 63 mm | -5 mm |
August temperatures in Red Deer have risen by about 2.1°C between 1981–1985 and 2021–2025.
August has ranged from a record low of -2°C (1992) to a record high of 33.9°C (2018).
Rainfall in August is a relatively wet time of year, averaging 66 mm, with a wettest year of 119 mm.
One of the best times to visit Red Deer
August is one of the best times to visit Red Deer. Expect days averaging 22.3°C and nights around 10.1°C (mean 16.2°C) — warmer than Red Deer's yearly average — with moderate rainfall (66 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 | 17.9°C | 12.2°C | 30.4°C | 6.6°C | 61 mm | 72% | 2.2 m/s | 5.3 |
| 2024 | 23.9°C | 17.7°C | 11.6°C | 31.4°C | 8.4°C | 89 mm | 67% | 2.4 m/s | 4.8 |
| 2023 | 24.4°C | 18.1°C | 11.8°C | 32.7°C | 5.9°C | 52 mm | 66% | 2.4 m/s | 4.9 |
| 2022 🔥 | 25.6°C | 19.4°C | 13.1°C | 31.2°C | 7.7°C | 34 mm | 65% | 2.2 m/s | 5.6 |
| 2021 | 23.2°C | 17.0°C | 10.8°C | 32.8°C | 4.9°C | 80 mm | 64% | 2.4 m/s | 4.8 |
| 2020 | 22.1°C | 16.1°C | 10.1°C | 30.2°C | 3.9°C | 59 mm | 72% | 2.4 m/s | 5.7 |
| 2019 | 20.1°C | 14.7°C | 9.4°C | 28.3°C | 4.7°C | 70 mm | 76% | 2.4 m/s | 4.7 |
| 2018 | 23.6°C | 17.1°C | 10.6°C | 33.9°C | 4.4°C | 29 mm | 63% | 2.2 m/s | 4.9 |
| 2017 | 23.5°C | 16.7°C | 9.9°C | 30.3°C | 7.0°C | 46 mm | 64% | 2.1 m/s | 5.5 |
| 2016 | 22.0°C | 16.3°C | 10.7°C | 27.7°C | 5.8°C | 79 mm | 72% | 2.4 m/s | 5 |
| 2015 | 23.0°C | 16.6°C | 10.3°C | 32.1°C | 2.0°C | 68 mm | 65% | 2.1 m/s | 5 |
| 2014 | 22.1°C | 16.6°C | 11.2°C | 28.9°C | 4.3°C | 75 mm | 73% | 1.9 m/s | 4.9 |
| 2013 | 24.0°C | 17.6°C | 11.3°C | 28.4°C | 6.6°C | 39 mm | 67% | 1.8 m/s | 5.3 |
| 2012 | 23.7°C | 17.5°C | 11.2°C | 29.5°C | 6.7°C | 44 mm | 66% | 2.2 m/s | 5.5 |
| 2011 | 22.2°C | 15.9°C | 9.7°C | 28.8°C | 5.3°C | 49 mm | 67% | 2 m/s | 5.6 |
| 2010 | 20.8°C | 15.0°C | 9.2°C | 29.5°C | 2.7°C | 38 mm | 69% | 2.2 m/s | 4.8 |
| 2009 | 22.5°C | 16.0°C | 9.4°C | 31.0°C | 5.8°C | 69 mm | 66% | 2.2 m/s | 5 |
| 2008 | 22.8°C | 16.7°C | 10.6°C | 33.2°C | 3.7°C | 73 mm | 65% | 2.4 m/s | 5.2 |
| 2007 | 19.6°C | 14.1°C | 8.5°C | 29.0°C | 3.4°C | 86 mm | 73% | 2.2 m/s | 4.8 |
| 2006 | 22.2°C | 15.9°C | 9.6°C | 30.2°C | 6.0°C | 77 mm | 66% | 2.2 m/s | 5.4 |
| 2005 | 19.3°C | 13.6°C | 7.9°C | 30.4°C | 2.5°C | 118 mm | 72% | 2.4 m/s | 4.7 |
| 2004 | 20.2°C | 14.9°C | 9.6°C | 27.8°C | 5.7°C | 91 mm | 75% | 2 m/s | 4.7 |
| 2003 | 25.6°C | 18.5°C | 11.5°C | 33.4°C | 5.4°C | 35 mm | 59% | 2.1 m/s | 5.4 |
| 2002 | 21.2°C | 15.0°C | 8.8°C | 29.1°C | 3.2°C | 73 mm | 65% | 2.3 m/s | 5 |
| 2001 | 25.7°C | 18.5°C | 11.3°C | 32.2°C | 7.8°C | 19 mm | 57% | 2.2 m/s | 6 |
| 2000 | 21.1°C | 15.0°C | 9.0°C | 26.9°C | 3.6°C | 60 mm | 69% | 2.2 m/s | 5.3 |
| 1999 | 21.6°C | 16.0°C | 10.3°C | 26.8°C | 4.9°C | 76 mm | 73% | 2 m/s | 4.8 |
| 1998 | 24.7°C | 18.3°C | 11.9°C | 33.8°C | 7.4°C | 51 mm | 61% | 2.1 m/s | 5.5 |
| 1997 | 22.8°C | 16.5°C | 10.1°C | 32.5°C | 6.0°C | 63 mm | 66% | 2.2 m/s | 5.2 |
| 1996 | 24.5°C | 17.5°C | 10.5°C | 31.8°C | 6.2°C | 34 mm | 59% | 2.5 m/s | 5.7 |
| 1995 | 18.9°C | 13.2°C | 7.6°C | 27.8°C | 4.2°C | 105 mm | 73% | 2.3 m/s | 4.6 |
| 1994 | 21.7°C | 16.0°C | 10.4°C | 31.3°C | 3.8°C | 104 mm | 69% | 2.1 m/s | 4.6 |
| 1993 | 20.3°C | 14.6°C | 8.8°C | 27.0°C | 3.3°C | 59 mm | 70% | 2.2 m/s | 5.1 |
| 1992 | 21.6°C | 15.1°C | 8.5°C | 31.7°C | -2.0°C | 55 mm | 61% | 2.2 m/s | 5.3 |
| 1991 🌧️ | 23.8°C | 17.9°C | 12.0°C | 32.1°C | 6.1°C | 119 mm | 69% | 2 m/s | 5.4 |
| 1990 | 22.8°C | 16.8°C | 10.8°C | 31.7°C | 3.4°C | 64 mm | 68% | 2.2 m/s | 5.2 |
| 1989 | 21.1°C | 15.9°C | 10.6°C | 30.9°C | 5.4°C | 95 mm | 73% | 2.1 m/s | 4.6 |
| 1988 | 21.1°C | 15.1°C | 9.1°C | 29.1°C | 4.9°C | 105 mm | 70% | 2.5 m/s | 4.9 |
| 1987 ❄️ | 18.2°C | 13.0°C | 7.8°C | 25.3°C | 3.7°C | 109 mm | 75% | 2.3 m/s | 4.6 |
| 1986 | 22.5°C | 15.9°C | 9.4°C | 28.0°C | 5.0°C | 30 mm | 66% | 2.1 m/s | 5.7 |
| 1985 | 20.1°C | 13.7°C | 7.3°C | 28.8°C | 2.6°C | 99 mm | 67% | 2.4 m/s | 5.1 |
| 1984 | 23.9°C | 17.3°C | 10.7°C | 30.9°C | 2.8°C | 42 mm | 62% | 2.4 m/s | 5 |
| 1983 | 23.6°C | 17.4°C | 11.2°C | 29.3°C | 4.1°C | 23 mm | 69% | 2 m/s | — |
| 1982 | 18.7°C | 13.1°C | 7.5°C | 25.2°C | 3.5°C | 70 mm | 76% | 2.3 m/s | — |
| 1981 | 24.2°C | 18.0°C | 11.8°C | 29.6°C | 5.0°C | 37 mm | 67% | 2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 22.3°C with lows near 10.1°C (mean 16.2°C), based on 45 years of NASA POWER data.
August averages 66 mm of rainfall in Red Deer, a relatively wet time of year. The wettest on record was 119 mm in 1991.
The hottest August reached 33.9°C in 2018. The coldest dipped to -2°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 2.1°C. Daytime highs moved from 22.1°C to 24.1°C and overnight lows from 9.7°C to 11.9°C over the same span.
August is one of the warmer months of the year in Red Deer and a relatively wet time of year, so plan for around 22.3°C daytime highs and 10.1°C at night.
Not quite — August is the 11th coolest month in Red Deer, averaging 16.2°C.
For August in Red Deer, pack light layers you can adjust through the day, with typical highs of 22.3°C and lows of 10.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 68% — moderately humid.
Average wind speed in August is 2.2 m/s. The windiest August on record averaged 2.5 m/s (1988).
The wettest August on record was 1991 with 119 mm. On average, August sees 66 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 Red Deer 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.
