August is one of the warmer months of the year in Fort McMurray, with average highs near 21.1°C and lows around 9.5°C (mean 15.3°C). It is a relatively wet time of year, averaging 67 mm of rainfall and 74% relative humidity across the period.
August is one of the warmer months of the year in Fort McMurray. Across 45 years of records, the warmest August in Fort McMurray was 1991 — when the month averaged 18.7°C — while the coldest was 1982 at 12.4°C. Typical August days reach 21.1°C with nights near 9.5°C. The long-term August temperature trend is broadly flat.
August is a relatively wet time of year in Fort McMurray, averaging 67 mm of rainfall. The wettest August on record was 2008 with 150 mm, while the driest was 1994 at 5 mm.
Relative humidity in Fort McMurray during August averages 74%. The most humid August was 2023 at 85%, and the least humid was 1998 at 60%.
August receives about 4.5 kWh/m²/day of solar energy in Fort McMurray. The sunniest August was 1998 at 5.4 kWh/m²/day, and the cloudiest was 2010 at 3.8.
Average wind speed in Fort McMurray during August is 0.1 m/s. The windiest Augusts were 2023, 2024 and 2025, among others at 0.1 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.4°C | 15.9°C | 14.6°C | 15.3°C | 15.4°C | 0°C |
| Avg High | 21.3°C | 22.1°C | 20.4°C | 20.9°C | 20.6°C | -0.7°C |
| Avg Low | 9.5°C | 9.6°C | 8.8°C | 9.8°C | 10.3°C | +0.8°C |
| Avg Rain | 56 mm | 57 mm | 72 mm | 66 mm | 91 mm | +35 mm |
August temperatures in Fort McMurray have stayed relatively stable across the record.
August has ranged from a record low of -1.8°C (1982) to a record high of 35.5°C (1991).
Rainfall in August is a relatively wet time of year, averaging 67 mm, with a wettest year of 150 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.3°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
One of the best times to visit Fort McMurray
August is one of the best times to visit Fort McMurray. Expect days averaging 21.1°C and nights around 9.5°C (mean 15.3°C) — warmer than Fort McMurray's yearly average — with moderate rainfall (67 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 | 22.0°C | 16.4°C | 10.9°C | 29.6°C | 2.3°C | 64 mm | 79% | 0.1 m/s | 4.1 |
| 2024 | 20.5°C | 15.2°C | 9.8°C | 25.5°C | 6.0°C | 86 mm | 81% | 0.1 m/s | 4.4 |
| 2023 | 19.9°C | 15.1°C | 10.2°C | 28.9°C | 5.2°C | 65 mm | 85% | 0.1 m/s | 4 |
| 2022 | 22.1°C | 16.7°C | 11.3°C | 28.0°C | 8.0°C | 115 mm | 82% | 0.1 m/s | 4.9 |
| 2021 | 19.8°C | 14.6°C | 9.4°C | 31.1°C | 3.3°C | 73 mm | 82% | 0.1 m/s | 4.3 |
| 2020 | 19.3°C | 14.7°C | 10.0°C | 28.1°C | 2.7°C | 145 mm | 83% | 0.1 m/s | 4.4 |
| 2019 | 17.6°C | 12.9°C | 8.1°C | 27.8°C | 3.9°C | 118 mm | 84% | 0.1 m/s | 3.9 |
| 2018 | 19.2°C | 14.1°C | 9.1°C | 27.7°C | 2.7°C | 60 mm | 80% | 0.1 m/s | 4.4 |
| 2017 | 21.3°C | 15.6°C | 9.9°C | 25.8°C | 5.6°C | 37 mm | 73% | 0.1 m/s | 4.8 |
| 2016 | 20.4°C | 15.3°C | 10.1°C | 25.6°C | 2.9°C | 106 mm | 77% | 0.1 m/s | 4.1 |
| 2015 | 21.7°C | 15.9°C | 10.2°C | 27.3°C | 3.4°C | 42 mm | 68% | 0.1 m/s | 4.5 |
| 2014 | 22.4°C | 16.3°C | 10.2°C | 28.3°C | 3.3°C | 48 mm | 71% | 0.1 m/s | 4.9 |
| 2013 | 21.8°C | 16.2°C | 10.7°C | 26.6°C | 6.7°C | 53 mm | 77% | 0.1 m/s | 4.6 |
| 2012 | 22.9°C | 16.6°C | 10.3°C | 30.4°C | 3.9°C | 59 mm | 66% | 0.1 m/s | 4.6 |
| 2011 | 21.9°C | 15.9°C | 10.0°C | 29.2°C | 5.8°C | 57 mm | 69% | 0.1 m/s | 4.7 |
| 2010 | 19.4°C | 14.3°C | 9.2°C | 27.5°C | 3.5°C | 87 mm | 78% | 0.1 m/s | 3.8 |
| 2009 | 20.6°C | 14.8°C | 9.0°C | 26.7°C | 5.5°C | 50 mm | 75% | 0.1 m/s | 4.4 |
| 2008 🌧️ | 21.2°C | 15.7°C | 10.2°C | 30.5°C | 0.6°C | 150 mm | 77% | 0.1 m/s | 4.2 |
| 2007 | 17.9°C | 12.7°C | 7.5°C | 27.2°C | 1.2°C | 106 mm | 76% | 0.1 m/s | 3.9 |
| 2006 | 20.7°C | 15.0°C | 9.3°C | 26.9°C | 5.8°C | 65 mm | 74% | 0.1 m/s | 4.7 |
| 2005 | 18.1°C | 13.0°C | 7.9°C | 27.7°C | 3.5°C | 89 mm | 81% | 0.1 m/s | 4.3 |
| 2004 | 18.5°C | 12.6°C | 6.7°C | 30.5°C | 0.9°C | 42 mm | 76% | 0.1 m/s | 4.2 |
| 2003 | 22.8°C | 16.6°C | 10.5°C | 29.6°C | 5.7°C | 26 mm | 68% | 0.1 m/s | 4.5 |
| 2002 | 20.6°C | 14.3°C | 7.9°C | 29.4°C | 0.4°C | 52 mm | 70% | 0.1 m/s | 4.4 |
| 2001 | 24.1°C | 17.3°C | 10.6°C | 30.5°C | 7.0°C | 34 mm | 65% | 0.1 m/s | 5 |
| 2000 | 19.8°C | 14.1°C | 8.5°C | 25.5°C | -0.1°C | 105 mm | 74% | 0.1 m/s | 4.3 |
| 1999 | 23.7°C | 17.0°C | 10.3°C | 32.0°C | 4.3°C | 68 mm | 65% | 0.1 m/s | 4.7 |
| 1998 | 24.5°C | 17.8°C | 11.0°C | 35.0°C | 6.3°C | 12 mm | 60% | 0.1 m/s | 5.4 |
| 1997 | 21.2°C | 15.6°C | 10.0°C | 31.6°C | 4.3°C | 76 mm | 76% | 0.1 m/s | 4.5 |
| 1996 | 21.3°C | 15.5°C | 9.8°C | 29.7°C | 5.9°C | 80 mm | 77% | 0.1 m/s | 4.7 |
| 1995 | 17.7°C | 12.7°C | 7.8°C | 26.4°C | 3.6°C | 149 mm | 80% | 0.1 m/s | 3.9 |
| 1994 | 23.5°C | 16.7°C | 9.8°C | 29.4°C | 4.1°C | 5 mm | 62% | 0.1 m/s | 5 |
| 1993 | 20.7°C | 14.8°C | 8.8°C | 28.8°C | 2.4°C | 72 mm | 74% | 0.1 m/s | 4.4 |
| 1992 | 20.7°C | 14.0°C | 7.2°C | 33.3°C | -1.7°C | 38 mm | 64% | 0.1 m/s | 4.7 |
| 1991 🔥 | 25.5°C | 18.7°C | 11.9°C | 35.5°C | 6.9°C | 29 mm | 66% | 0.1 m/s | 5 |
| 1990 | 22.3°C | 16.0°C | 9.6°C | 33.9°C | 1.7°C | 43 mm | 66% | 0.1 m/s | 4.6 |
| 1989 | 22.8°C | 17.1°C | 11.4°C | 29.4°C | 5.3°C | 45 mm | 75% | 0.1 m/s | 4.6 |
| 1988 | 20.5°C | 15.1°C | 9.8°C | 27.4°C | 3.5°C | 86 mm | 75% | 0.1 m/s | 4.2 |
| 1987 | 18.4°C | 13.1°C | 7.8°C | 24.4°C | 3.4°C | 57 mm | 73% | 0.1 m/s | 4.7 |
| 1986 | 20.9°C | 14.5°C | 8.1°C | 28.0°C | -0.6°C | 43 mm | 72% | 0.1 m/s | 4.9 |
| 1985 | 19.9°C | 13.9°C | 7.9°C | 28.0°C | 3.5°C | 39 mm | 71% | 0.1 m/s | 4.6 |
| 1984 | 22.7°C | 16.5°C | 10.3°C | 33.3°C | 0.6°C | 74 mm | 70% | 0.1 m/s | 4.3 |
| 1983 | 23.4°C | 17.2°C | 11.0°C | 32.3°C | 5.2°C | 46 mm | 72% | 0.1 m/s | — |
| 1982 ❄️ | 17.8°C | 12.4°C | 7.1°C | 25.3°C | -1.8°C | 91 mm | 76% | 0.1 m/s | — |
| 1981 | 25.3°C | 18.6°C | 11.8°C | 33.3°C | 3.0°C | 24 mm | 65% | 0.1 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 21.1°C with lows near 9.5°C (mean 15.3°C), based on 45 years of NASA POWER data.
August averages 67 mm of rainfall in Fort McMurray, a relatively wet time of year. The wettest on record was 150 mm in 2008.
The hottest August reached 35.5°C in 1991. The coldest dipped to -1.8°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have fallen by about 0.1°C — but days and nights have moved in opposite directions. Overnight lows rose from 9.6°C to 10.3°C while daytime highs eased from 21.8°C to 20.9°C, narrowing the gap between day and night.
August is one of the warmer months of the year in Fort McMurray and a relatively wet time of year, so plan for around 21.1°C daytime highs and 9.5°C at night.
Not quite — August is the 11th coolest month in Fort McMurray, averaging 15.3°C.
For August in Fort McMurray, pack light layers you can adjust through the day, with typical highs of 21.1°C and lows of 9.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 74% — moderately humid.
Average wind speed in August is 0.1 m/s. The windiest August on record averaged 0.1 m/s (1981).
The wettest August on record was 2008 with 150 mm. On average, August 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 Fort McMurray 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.
