August is one of the warmer months of the year in High River, with average highs near 24.5°C and lows around 10.5°C (mean 17.5°C). It is a relatively wet time of year, averaging 52 mm of rainfall and 58% relative humidity across the period.
August is one of the warmer months of the year in High River. Across 45 years of records, the warmest August in High River was 2022 — when the month averaged 20.6°C — while the coldest was 1987 at 13.8°C. Typical August days reach 24.5°C with nights near 10.5°C. The long-term trend is warming, about 0.3°C per decade.
August is a relatively wet time of year in High River, averaging 52 mm of rainfall. The wettest August on record was 2004 with 110 mm, while the driest was 2001 at 5 mm.
Relative humidity in High River during August averages 58%. The most humid August was 2004 at 70%, and the least humid was 2001 at 39%.
August receives about 5.5 kWh/m²/day of solar energy in High River. The sunniest August was 2001 at 6.2 kWh/m²/day, and the cloudiest was 2004 at 4.9.
Average wind speed in High River during August is 1.1 m/s. The windiest August was 1988 at 1.3 m/s, while the calmest were 2013 and 2014 at 0.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.9°C | 17.5°C | 17.3°C | 17.5°C | 18.6°C | +1.7°C |
| Avg High | 24.0°C | 24.5°C | 24.5°C | 24.4°C | 25.4°C | +1.4°C |
| Avg Low | 9.8°C | 10.4°C | 10.1°C | 10.6°C | 11.8°C | +2°C |
| Avg Rain | 52 mm | 48 mm | 53 mm | 51 mm | 60 mm | +8 mm |
August temperatures in High River have risen by about 1.2°C between 1981–1985 and 2021–2025.
August has ranged from a record low of -3.4°C (1992) to a record high of 37°C (2018).
Rainfall in August is a relatively wet time of year, averaging 52 mm, with a wettest year of 110 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
One of the best times to visit High River
August is one of the best times to visit High River. Expect days averaging 24.5°C and nights around 10.5°C (mean 17.5°C) — warmer than High River's yearly average — with moderate rainfall (52 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 | 24.3°C | 18.0°C | 11.7°C | 29.2°C | 6.7°C | 56 mm | 67% | 1 m/s | 5.7 |
| 2024 | 24.2°C | 17.9°C | 11.7°C | 32.5°C | 4.5°C | 84 mm | 64% | 1.1 m/s | 5.2 |
| 2023 | 26.0°C | 19.1°C | 12.2°C | 34.7°C | 5.3°C | 56 mm | 58% | 1 m/s | 5.4 |
| 2022 🔥 | 27.7°C | 20.6°C | 13.5°C | 32.5°C | 6.8°C | 43 mm | 56% | 1.1 m/s | 5.8 |
| 2021 | 24.6°C | 17.9°C | 11.2°C | 35.1°C | 4.7°C | 69 mm | 57% | 1.2 m/s | 5 |
| 2020 | 25.8°C | 18.2°C | 10.7°C | 32.3°C | 4.6°C | 49 mm | 56% | 1.1 m/s | 6.1 |
| 2019 | 23.3°C | 16.7°C | 10.1°C | 31.1°C | 5.7°C | 62 mm | 65% | 1 m/s | 5.3 |
| 2018 | 25.4°C | 18.2°C | 11.1°C | 37.0°C | 5.3°C | 35 mm | 55% | 1.1 m/s | 5.2 |
| 2017 | 25.8°C | 18.3°C | 10.8°C | 32.4°C | 6.5°C | 21 mm | 56% | 1 m/s | 5.5 |
| 2016 | 22.8°C | 16.6°C | 10.4°C | 29.5°C | 6.3°C | 84 mm | 67% | 1.1 m/s | 5.1 |
| 2015 | 24.3°C | 17.6°C | 10.8°C | 34.0°C | 2.5°C | 65 mm | 58% | 1.1 m/s | 5.2 |
| 2014 | 23.2°C | 17.1°C | 11.1°C | 30.3°C | 5.1°C | 83 mm | 68% | 0.9 m/s | 5 |
| 2013 | 25.0°C | 18.1°C | 11.2°C | 29.7°C | 6.6°C | 30 mm | 60% | 0.9 m/s | 5.5 |
| 2012 | 26.1°C | 18.5°C | 10.9°C | 31.5°C | 4.6°C | 39 mm | 55% | 1.1 m/s | 5.8 |
| 2011 | 25.2°C | 17.8°C | 10.4°C | 30.5°C | 4.4°C | 38 mm | 56% | 1 m/s | 6.1 |
| 2010 | 22.9°C | 16.2°C | 9.4°C | 31.4°C | 2.0°C | 55 mm | 60% | 1.1 m/s | 5.3 |
| 2009 | 23.6°C | 16.7°C | 9.8°C | 31.8°C | 5.4°C | 62 mm | 61% | 1.1 m/s | 5.1 |
| 2008 | 24.7°C | 17.6°C | 10.6°C | 34.9°C | 4.5°C | 46 mm | 54% | 1.2 m/s | 5.6 |
| 2007 | 23.8°C | 16.4°C | 9.1°C | 31.8°C | 3.4°C | 36 mm | 57% | 1.1 m/s | 5.3 |
| 2006 | 24.2°C | 17.1°C | 10.0°C | 32.6°C | 5.7°C | 51 mm | 57% | 1 m/s | 5.8 |
| 2005 | 21.7°C | 15.0°C | 8.3°C | 30.3°C | 3.2°C | 88 mm | 66% | 1.2 m/s | 5.3 |
| 2004 🌧️ | 22.6°C | 16.3°C | 10.0°C | 30.3°C | 7.0°C | 110 mm | 70% | 1 m/s | 4.9 |
| 2003 | 28.0°C | 20.1°C | 12.2°C | 34.1°C | 6.4°C | 28 mm | 48% | 1.1 m/s | 5.7 |
| 2002 | 22.2°C | 15.4°C | 8.5°C | 29.1°C | 2.3°C | 67 mm | 61% | 1.1 m/s | 5.4 |
| 2001 | 28.5°C | 20.3°C | 12.2°C | 35.1°C | 8.7°C | 5 mm | 39% | 1.2 m/s | 6.2 |
| 2000 | 25.8°C | 17.9°C | 10.0°C | 33.3°C | 4.2°C | 38 mm | 51% | 1.1 m/s | 5.8 |
| 1999 | 25.1°C | 18.0°C | 10.9°C | 31.2°C | 5.2°C | 68 mm | 59% | 1.1 m/s | 5.3 |
| 1998 | 27.2°C | 19.9°C | 12.5°C | 33.2°C | 7.1°C | 14 mm | 50% | 1 m/s | 6.1 |
| 1997 | 24.4°C | 17.4°C | 10.4°C | 33.3°C | 5.1°C | 46 mm | 57% | 1.1 m/s | 5.5 |
| 1996 | 27.0°C | 19.1°C | 11.1°C | 32.6°C | 7.1°C | 22 mm | 45% | 1.2 m/s | 5.9 |
| 1995 | 22.9°C | 15.6°C | 8.4°C | 29.5°C | 5.3°C | 40 mm | 55% | 1.1 m/s | 5.5 |
| 1994 | 24.5°C | 17.6°C | 10.7°C | 33.5°C | 2.1°C | 52 mm | 57% | 1.1 m/s | 5.3 |
| 1993 | 20.4°C | 14.4°C | 8.4°C | 26.2°C | 3.8°C | 77 mm | 70% | 1.1 m/s | 5.1 |
| 1992 | 21.9°C | 15.0°C | 8.2°C | 31.8°C | -3.4°C | 56 mm | 60% | 1.1 m/s | 5.6 |
| 1991 | 26.3°C | 19.2°C | 12.1°C | 33.7°C | 6.8°C | 58 mm | 58% | 1.1 m/s | 5.7 |
| 1990 | 25.2°C | 18.4°C | 11.5°C | 32.7°C | 5.1°C | 42 mm | 57% | 1.1 m/s | 5.7 |
| 1989 | 22.1°C | 16.2°C | 10.2°C | 32.0°C | 3.5°C | 68 mm | 63% | 1.1 m/s | 5.1 |
| 1988 | 24.2°C | 16.8°C | 9.4°C | 32.0°C | 5.7°C | 78 mm | 57% | 1.3 m/s | 5.3 |
| 1987 ❄️ | 20.3°C | 13.8°C | 7.4°C | 29.1°C | 3.4°C | 84 mm | 66% | 1.1 m/s | 5.2 |
| 1986 | 25.6°C | 17.8°C | 10.0°C | 31.2°C | 5.3°C | 23 mm | 54% | 1 m/s | 5.9 |
| 1985 | 22.2°C | 15.1°C | 8.1°C | 29.7°C | 3.1°C | 79 mm | 58% | 1.2 m/s | 5.2 |
| 1984 | 26.5°C | 18.7°C | 10.9°C | 32.7°C | 3.1°C | 18 mm | 50% | 1.2 m/s | 5.5 |
| 1983 | 26.3°C | 19.2°C | 12.2°C | 32.7°C | 6.3°C | 51 mm | 57% | 1.1 m/s | — |
| 1982 | 23.1°C | 15.9°C | 8.7°C | 28.7°C | 3.6°C | 34 mm | 59% | 1.2 m/s | — |
| 1981 | 25.7°C | 18.7°C | 11.7°C | 30.5°C | 5.3°C | 30 mm | 60% | 1 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 24.5°C with lows near 10.5°C (mean 17.5°C), based on 45 years of NASA POWER data.
August averages 52 mm of rainfall in High River, a relatively wet time of year. The wettest on record was 110 mm in 2004.
The hottest August reached 37°C in 2018. The coldest dipped to -3.4°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.2°C. Daytime highs moved from 24.8°C to 25.4°C and overnight lows from 10.3°C to 12.1°C over the same span.
August is one of the warmer months of the year in High River and a relatively wet time of year, so plan for around 24.5°C daytime highs and 10.5°C at night.
Not quite — August is the 11th coolest month in High River, averaging 17.5°C.
For August in High River, pack light layers you can adjust through the day, with typical highs of 24.5°C and lows of 10.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 58% — moderately humid.
Average wind speed in August is 1.1 m/s. The windiest August on record averaged 1.3 m/s (1988).
The wettest August on record was 2004 with 110 mm. On average, August 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 High River 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.
