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 comes with a drop in the average high-temperature, falling from August's agreeable 22.3°C (72.1°F) to an enjoyable 17.3°C (63.1°F). In September, the recorded average low-temperature is a chilly 7.1°C (44.8°F).Humidity
The average relative humidity in September is 62%.Rainfall
In Onion Lake, in September, during 8 rainfall days, 16mm (0.63") of precipitation is typically accumulated. Throughout the year, there are 98 rainfall days, and 307mm (12.09") of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.6 snowfall days, it receives 7mm (0.28") of snow. In Onion Lake, during the entire year, snow falls for 80.3 days and aggregates up to 529mm (20.83") of snow.Daylight
In September, the average length of the day is 12h and 40min.On the first day of the month, sunrise is at 6:30 am and sunset at 8:09 pm. On the last day of September, sunrise is at 7:21 am and sunset at 6:57 pm CST.
Sunshine
In Onion Lake, the average sunshine in September is 9.1h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the UV index of 3 transforms into the following advice:
Heed the precautions - It is counselled to guard against solar damage. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September?
When does it start to snow in Onion Lake?
What is the average length of the day in September in Onion Lake?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Onion Lake, Canada
- Average high temperature in September: 17.3°C
The warmest month (with the highest average high temperature) is August (22.3°C).
The month with the lowest average high temperature is February (-9.3°C).
- Average low temperature in September: 7.1°C
The month with the highest average low temperature is July (11.4°C).
The coldest month (with the lowest average low temperature) is February (-16.8°C).
Average pressure in September
Onion Lake, Canada
- Average pressure in September: 1013.3mbar
The month with the highest atmospheric pressure is February (1021.3mbar).
The month with the lowest atmospheric pressure is June (1009.9mbar).
Average wind speed in September
Onion Lake, Canada
- Average wind speed in September: 13.2km/h
The windiest months (with the highest average wind speed) are January and April (14.9km/h).
The calmest month (with the lowest average wind speed) is August (12.1km/h).
Average humidity in September
Onion Lake, Canada
- Average humidity in September: 62%
The months with the highest relative humidity are January, February and March (92%).
The month with the lowest relative humidity is May (59%).
Average rainfall in September
Onion Lake, Canada
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is June (71mm).
The driest month (with the least rainfall) is December (9mm).
Average rainfall days in September
Onion Lake, Canada
- Average rainfall days in September: 8 days
The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (2 days).
Average snowfall in September
Onion Lake, Canada
- Average snowfall in September: 7mm
The month with the highest snowfall is April (100mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Onion Lake, Canada
- Average snowfall days in September: 0.6 days
The month with the highest number of snowfall days is March (14.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Onion Lake, Canada
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 6min).
Average sunshine days in September
Onion Lake, Canada
- Average sunshine days in September: 20.3 days
The month with the most sunshine days is September (20.3 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in September
Onion Lake, Canada
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February and October (UV index 1).
Average cloud cover in September
Onion Lake, Canada
- Average cloud cover in September: 32
The months with the most cloud cover are February and March (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Onion Lake, Canada
- Average visibility in September: 10km
The months with the highest visibility are May, August and September (10km).
The month with the lowest visibility is February (7km).
