Weather in Calgary in September
September in Calgary is cool with average temperatures around 10.9°C (51.6°F). Moderate rainfall of 53mm spread over 9 days.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
17.4°C
63.3°F
Low
4.4°C
39.9°F
Precipitation
53 mm
2.1 inches
~9 rainy days
Conditions
Humidity
67%
Comparison to Adjacent Months
September is 4.8°C cooler than August.
September is 6.7°C warmer than October, 21mm wetter than October.