September weather forecastLaval-Ouest, Canada
September
Weather in September
September, the first month of the autumn in Laval-Ouest, is still a pleasant month, with an average temperature fluctuating between 10.6°C (51.1°F) and 20.2°C (68.4°F).Temperature
The advent of September brings a slight shift in average high-temperature, moving from a warm 24.3°C (75.7°F) in August to an agreeable 20.2°C (68.4°F). Laval-Ouest experiences a mean temperature of 10.6°C (51.1°F) during September nights.Humidity
In September, the average relative humidity is 78%.Rainfall
January and September are months with the least rain when the rain falls for 8.8 days and typically aggregates up to 23mm (0.91") of rain.Snowfall
In Laval-Ouest, Canada, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:17 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:37 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In Laval-Ouest, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Laval-Ouest, Canada
- Average high temperature in September: 20.2°C
The warmest month (with the highest average high temperature) is July (25.1°C).
The month with the lowest average high temperature is January (-6.1°C).
- Average low temperature in September: 10.6°C
The month with the highest average low temperature is July (15.3°C).
The coldest month (with the lowest average low temperature) is January (-13.4°C).
Average pressure in September
Laval-Ouest, 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
Laval-Ouest, Canada
- Average wind speed in September: 10.9km/h
The windiest month (with the highest average wind speed) is April (14.5km/h).
The calmest months (with the lowest average wind speed) are July and August (10.7km/h).
Average humidity in September
Laval-Ouest, Canada
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Laval-Ouest, Canada
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is October (37mm).
The driest months (with the least rainfall) are January and September (23mm).
Average rainfall days in September
Laval-Ouest, Canada
- Average rainfall days in September: 8.8 days
The month with the highest number of rainy days is July (13.8 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in September
Laval-Ouest, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (84mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Laval-Ouest, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Laval-Ouest, Canada
- Average daylight in September: 12h and 30min
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 42min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in September
Laval-Ouest, Canada
- Average sunshine days in September: 19.2 days
The month with the most sunshine days is September (19.2 days).
The month with the least sunshine days is June (13.9 days).
Average UV index in September
Laval-Ouest, Canada
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Laval-Ouest, 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
Laval-Ouest, 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).
