Calgary Weather in August
In August, Calgary averages a high of 23°C (73°F) and a low of 9°C (49°F), from 55 years of daily records (1971–2026).
23°C
Average high
73°F
9°C
Average low
49°F
37°C
Record high
98°F · August 10, 2018
-3°C
Record low
26°F · August 25, 1992
What August Is Like in Calgary
- August in Calgary has become 1.6°C (2.9°F) warmer on average: the 2012–2026 average against 1970–1989.
- The coldest August reading, -3°C (26°F) on August 25, 1992, has not been matched in 34 years.
- A typical August brings 2.2 days above 30°C (86°F).
- The warmest August in the record was 1971; the coldest was 1980.
At least 1 mm of rain falls on 22% of August days, and the month averages 53 mm in total.
Warmest: 2001 (27.6°C)Latest: 2026 (24.1°C)10-year averageLong-run average (22.9°C)
Look Up a Day in August
See the weather in Calgary on any August date, year by year.
Source: NOAA GHCN-Daily, Calgary Int'L Cs (1999–2026); University Of Calgary (1971–1990); Calgary Int'L A (1980–2012); Calgary Glenmore Dam (1971–1978). Averages cover 1971–2026. How we compute this