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
September
Weather in September
Temperature
September indicates a shift in the average high-temperature, from August's moderately hot 26.1°C (79°F) to a pleasant 20.6°C (69.1°F). Cassils reports an average low-temperature of 10.4°C (50.7°F) during the nights of September.Humidity
The average relative humidity in September in Cassils is 49%.Rainfall
In Cassils, in September, during 7.5 rainfall days, 18mm (0.71") of precipitation is typically accumulated. Throughout the year, there are 90.9 rainfall days, and 243mm (9.57") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Cassils. Throughout September, in the average 0.4 snowfall days, it receives 8mm (0.31") of snow. Throughout the year, there are 50.5 snowfall days, and 397mm (15.63") of snow is accumulated.Daylight
In September, the average length of the day in Cassils is 12h and 36min.On the first day of the month, sunrise is at 6:43 am and sunset at 8:12 pm. On the last day of September, sunrise is at 7:28 am and sunset at 7:07 pm MDT.
Sunshine
In September, the average sunshine is 9.7h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily high UV index of 4 in September leads to these guidelines:
Adopt protective measures - It is advised to guard against sun damage. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Cassils?
What is the average humidity in September in Cassils?
How many days does it rain in September in Cassils?
When does it start snowing in Cassils?
How many hours of daylight does Cassils have in September?
What time are sunrise and sunset in September in Cassils?
How long on average sun shines in September in Cassils?
How high is the UV index in September in Cassils?
Average temperature in September
Cassils, Canada
- Average high temperature in September: 20.6°C
The warmest month (with the highest average high temperature) is July (26.6°C).
The month with the lowest average high temperature is December (-4.3°C).
- Average low temperature in September: 10.4°C
The month with the highest average low temperature is August (14.8°C).
The coldest month (with the lowest average low temperature) is February (-11.2°C).
Average pressure in September
Cassils, Canada
- Average pressure in September: 1013.2mbar
The month with the highest atmospheric pressure is February (1020mbar).
The month with the lowest atmospheric pressure is June (1010.1mbar).
Average wind speed in September
Cassils, Canada
- Average wind speed in September: 14.4km/h
The windiest month (with the highest average wind speed) is January (16.5km/h).
The calmest month (with the lowest average wind speed) is August (13.2km/h).
Average humidity in September
Cassils, Canada
- Average humidity in September: 49%
The month with the highest relative humidity is December (85%).
The month with the lowest relative humidity is August (46%).
Average rainfall in September
Cassils, Canada
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is June (59mm).
The driest month (with the least rainfall) is January (6mm).
Average rainfall days in September
Cassils, Canada
- Average rainfall days in September: 7.5 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in September
Cassils, Canada
- Average snowfall in September: 8mm
The month with the highest snowfall is November (74mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Cassils, Canada
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is December (9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Cassils, Canada
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).
Average sunshine days in September
Cassils, Canada
- Average sunshine days in September: 20.5 days
The month with the most sunshine days is January (22 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in September
Cassils, Canada
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Cassils, Canada
- Average cloud cover in September: 25
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 20).
Average visibility in September
Cassils, Canada
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, November and December (9km).
