Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September's arrival in Calgary coincides with a soft drop in the average high-temperature, subtly decreasing from August's pleasant 22.9°C (73.2°F) to a refreshing 18°C (64.4°F). The average low-temperature in Calgary, Canada, during September nights is a chilly 6.5°C (43.7°F).Humidity
September is the least humid month, with an average relative humidity of 59%.Rainfall
In September, the rain falls for 7.8 days. Throughout September, 16mm (0.63") of precipitation is accumulated. In Calgary, Canada, during the entire year, the rain falls for 94.1 days and collects up to 288mm (11.34") of precipitation.Snowfall
Months with snowfall in Calgary are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 1.5 snowfall days, it receives 29mm (1.14") of snow. Throughout the year, in Calgary, there are 75.3 snowfall days, and 629mm (24.76") of snow is accumulated.Daylight
In Calgary, the average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 6:51 am and sunset at 8:20 pm. On the last day of September, sunrise is at 7:36 am and sunset at 7:15 pm MDT.
Sunshine
The average sunshine in September is 8.8h.UV index
In Calgary, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Calgary in September?
What is the least humid month in Calgary?
What is the average humidity in September in Calgary?
How much does it rain in Calgary in September?
When does it start to snow in Calgary?
How many hours of daylight does Calgary have in September?
When is the sunrise / sunset in September in Calgary?
How many hours of sunshine does Calgary have in September?
How high is the UV index in September in Calgary?
Average temperature in September
Calgary, Canada
- Average high temperature in September: 18°C
The warmest month (with the highest average high temperature) is August (22.9°C).
The month with the lowest average high temperature is December (-4.8°C).
- Average low temperature in September: 6.5°C
The month with the highest average low temperature is July (10°C).
The coldest month (with the lowest average low temperature) is December (-11.5°C).
Average pressure in September
Calgary, Canada
- Average pressure in September: 1013.8mbar
The month with the highest atmospheric pressure is February (1019.3mbar).
The month with the lowest atmospheric pressure is June (1010.8mbar).
Average wind speed in September
Calgary, Canada
- Average wind speed in September: 10.9km/h
The windiest month (with the highest average wind speed) is January (13.1km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).
Average humidity in September
Calgary, Canada
- Average humidity in September: 59%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is September (59%).
Average rainfall in September
Calgary, Canada
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is June (65mm).
The driest month (with the least rainfall) is January (9mm).
Average rainfall days in September
Calgary, Canada
- Average rainfall days in September: 7.8 days
The month with the highest number of rainy days is June (17 days).
The month with the least rainy days is November (2.5 days).
Average snowfall in September
Calgary, Canada
- Average snowfall in September: 29mm
The month with the highest snowfall is April (102mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Calgary, Canada
- Average snowfall days in September: 1.5 days
The month with the highest number of snowfall days is February (12.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Calgary, Canada
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Calgary, Canada
- Average sunshine days in September: 20.1 days
The month with the most sunshine days is October (22.1 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in September
Calgary, Canada
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Calgary, Canada
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Calgary, Canada
- Average visibility in September: 10km
The months with the highest visibility are June, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, July, October, November and December (9km).
Calgary, Canada
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