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
The advent of September brings a subtle shift in temperature, with the average high moving from a warm 24.4°C (75.9°F) in August to an agreeable 20.5°C (68.9°F). The average temperature during September nights in Rosemère is registered at a cool 11.2°C (52.2°F).Humidity
The average relative humidity in September in Rosemère, Canada, is 77%.Rainfall
September is the month with the least rainfall in Rosemère, Canada. Rain falls for 11.3 days and accumulates 49mm (1.93") of precipitation.Snowfall
May through September are months without snowfall in Rosemère.Daylight
In September, the average length of the day in Rosemère is 12h and 31min.On the first day of the month, sunrise is at 6:17 am and sunset at 7:32 pm. On the last day of September, sunrise is at 6:53 am and sunset at 6:36 pm EDT.
Sunshine
In September, the average sunshine in Rosemère is 8.7h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 3 translates into these guidelines:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What is the average September temperature in Rosemère?
What is the average humidity in September in Rosemère?
What is the driest month in Rosemère?
How much does it rain in Rosemère in September?
When it does not snow in Rosemère?
Does it snow in Rosemère in September?
What is the average length of the day in September in Rosemère?
When are sunrise and sunset in September in Rosemère?
How many hours of sunshine does Rosemère have in September?
What is the UV index reading in September in Rosemère?
Average temperature in September
Rosemère, Canada
- Average high temperature in September: 20.5°C
The warmest month (with the highest average high temperature) is July (25.3°C).
The month with the lowest average high temperature is January (-6.1°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is July (15.8°C).
The coldest month (with the lowest average low temperature) is January (-13.3°C).
Average pressure in September
Rosemère, Canada
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is November (1017.8mbar).
The month with the lowest atmospheric pressure is June (1012.4mbar).
Average wind speed in September
Rosemère, Canada
- Average wind speed in September: 10.9km/h
The windiest month (with the highest average wind speed) is April (14.3km/h).
The calmest months (with the lowest average wind speed) are July and August (10.8km/h).
Average humidity in September
Rosemère, Canada
- Average humidity in September: 77%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (74%).
Average rainfall in September
Rosemère, Canada
- Average rainfall in September: 49mm
The wettest month (with the highest rainfall) is October (78mm).
The driest month (with the least rainfall) is September (49mm).
Average rainfall days in September
Rosemère, Canada
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in September
Rosemère, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (263mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Rosemère, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Rosemère, Canada
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in September
Rosemère, Canada
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is July (11.2 days).
Average UV index in September
Rosemère, Canada
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Rosemère, Canada
- Average cloud cover in September: 36
The month with the most cloud cover is February (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Rosemère, Canada
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September, October and November (9km).
The months with the lowest visibility are January, February, March and December (8km).
Rosemère, Canada
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