Calgary September Weather

Averages and records for weather in Calgary, Alberta in the month of September.
Typical Calgary September Weather
1991–2020
Average daily high 18.1 °C
Average daily low 4.7 °C
Average monthly precipitation 3.8 cm
Average monthly snow 2.9 cm
Daily chance of precipitation 29.6%
Daily chance of snow 3.5%
Calgary September Weather Records
1881–2024
Highest temperature 33.3 °C September 1, 1967
Lowest temperature -13.3 °C September 24, 1926
Highest daily low 17.0 °C September 4, 2022
Lowest daily high -4.4 °C September 23, 1934
Hottest average high temperature 24.8 °C 1938
Coldest average high temperature 10.4 °C 1965
Most daily precipitation 9.3 cm September 12, 1985
Most monthly precipitation 23.3 cm 1926
Most daily snow 24.6 cm September 29, 2019
Most monthly snow 82.0 cm 1925
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°C) Record (°C)
High Low High Low
September 1 20.9 7.0 33.3 -0.6
September 2 20.7 6.8 32.5 -1.1
September 3 20.4 6.6 32.7 -2.2
September 4 20.2 6.4 31.8 -2.8
September 5 20.0 6.3 32.8 -2.2
September 6 19.7 6.1 30.0 -3.3
September 7 19.5 5.9 32.2 -4.4
September 8 19.3 5.8 31.1 -4.4
September 9 19.2 5.6 30.7 -2.2
September 10 19.1 5.5 30.0 -4.4
September 11 19.0 5.4 29.1 -4.4
September 12 18.8 5.2 30.0 -6.1
September 13 18.7 5.1 30.0 -6.7
September 14 18.5 4.9 32.2 -6.1
September 15 18.3 4.8 30.6 -6.1
September 16 18.1 4.6 30.7 -3.9
September 17 17.9 4.4 31.3 -3.3
September 18 17.6 4.2 32.2 -3.9
September 19 17.4 4.0 31.1 -3.6
September 20 17.1 3.9 29.4 -7.8
September 21 16.9 3.7 28.9 -6.7
September 22 16.8 3.5 29.0 -7.8
September 23 16.6 3.4 33.2 -11.7
September 24 16.4 3.2 31.9 -13.3
September 25 16.2 3.0 31.1 -12.2
September 26 16.0 2.9 30.0 -8.3
September 27 15.7 2.7 31.7 -9.4
September 28 15.5 2.5 28.9 -9.0
September 29 15.3 2.3 29.4 -8.3
September 30 15.1 2.1 30.0 -8.6
Weather Station Details
Years Station Coordinates
2012–2024 Calgary International Airport location
1881–2012 Calgary International Airport location