Calgary Weather in October
In October, Calgary averages a high of 12°C (53°F) and a low of -1°C (30°F), from 54 years of daily records (1971–2026).
12°C
Average high
53°F
-1°C
Average low
30°F
28°C
Record high
82°F · October 6, 1980
-22°C
Record low
-8°F · October 30, 1984
What October Is Like in Calgary
- The October heat record, 28°C (82°F) on October 6, 1980, has stood for 46 years.
- The coldest October reading, -22°C (-8°F) on October 30, 1984, has not been matched in 42 years.
- October in Calgary has become 1.0°C (1.8°F) cooler on average: the 2011–2025 average against 1970–1989.
- Snow falls on about 3.4 days in a typical October.
At least 1 mm of rain falls on 12% of October days, and the month averages 17 mm in total.
Warmest: 2022 (16.0°C)Latest: 2025 (13.4°C)10-year averageLong-run average (11.6°C)
Look Up a Day in October
See the weather in Calgary on any October 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