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
With the commencement of September, Rouyn records a moderate temperature decline, with the average high easing from August's agreeable 21.8°C (71.2°F) to a comfortable 17°C (62.6°F). September witnesses an average low-temperature hovering around a frosty 7.3°C (45.1°F).Humidity
The average relative humidity in September is 80%.Rainfall
In Rouyn, in September, during 14.4 rainfall days, 53mm (2.09") of precipitation is typically accumulated. Throughout the year, in Rouyn, Canada, there are 127.7 rainfall days, and 670mm (26.38") of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.5 snowfall days, it receives 4mm (0.16") of snow. Throughout the year, there are 141.6 snowfall days, and 1829mm (72.01") of snow is accumulated.Daylight
In Rouyn, the average length of the day in September is 12h and 34min.On the first day of September in Rouyn, sunrise is at 6:34 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 6:56 pm EDT.
Sunshine
In Rouyn, the average sunshine in September is 7.4h.UV index
In Rouyn, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily UV index of 2 turns into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
What are September temperatures in Rouyn?
What is the average humidity in September in Rouyn?
How much does it rain in Rouyn in September?
When does it start snowing in Rouyn?
What is the average length of the day in September in Rouyn?
When are sunrise and sunset in September in Rouyn?
How many hours of sunshine does Rouyn have in September?
What is the UV index reading in September in Rouyn?
Average temperature in September
Rouyn, Canada
- Average high temperature in September: 17°C
The warmest month (with the highest average high temperature) is July (23.7°C).
The month with the lowest average high temperature is January (-10.4°C).
- Average low temperature in September: 7.3°C
The month with the highest average low temperature is July (11.8°C).
The coldest month (with the lowest average low temperature) is January (-18.4°C).
Average pressure in September
Rouyn, Canada
- Average pressure in September: 1016.1mbar
The month with the highest atmospheric pressure is March (1018.9mbar).
The months with the lowest atmospheric pressure are June and July (1012mbar).
Average wind speed in September
Rouyn, Canada
- Average wind speed in September: 10.6km/h
The windiest month (with the highest average wind speed) is November (12.1km/h).
The calmest month (with the lowest average wind speed) is August (10km/h).
Average humidity in September
Rouyn, Canada
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (94%).
The months with the lowest relative humidity are May and June (68%).
Average rainfall in September
Rouyn, Canada
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is October (79mm).
The driest month (with the least rainfall) is February (41mm).
Average rainfall days in September
Rouyn, Canada
- Average rainfall days in September: 14.4 days
The month with the highest number of rainy days is August (17.4 days).
The month with the least rainy days is February (1.5 days).
Average snowfall in September
Rouyn, Canada
- Average snowfall in September: 4mm
The month with the highest snowfall is January (323mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Rouyn, Canada
- Average snowfall days in September: 0.5 days
The months with the highest number of snowfall days are January and December (23.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Rouyn, Canada
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The months with the least sunshine are January and February (Average sunshine: 1h and 0min).
Average sunshine days in September
Rouyn, Canada
- Average sunshine days in September: 13.2 days
The month with the most sunshine days is June (13.3 days).
The months with the least sunshine days are February and April (6.8 days).
Average UV index in September
Rouyn, Canada
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover in September
Rouyn, Canada
- Average cloud cover in September: 50
The months with the most cloud cover are January and February (Cloud cover 89).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in September
Rouyn, Canada
- Average visibility in September: 8km
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January and February (5km).
Rouyn, Canada
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