September weather forecastLavaltrie, Canada
September
Weather in September
September, the first month of the autumn in Lavaltrie, is also an agreeable month, with an average temperature ranging between min 11°C (51.8°F) and max 20.5°C (68.9°F).Temperature
Transition into September subtly marks a drop in the average high-temperature, moderately moving from a warm 24.6°C (76.3°F) in August to a pleasant 20.5°C (68.9°F). An average low-temperature of 11°C (51.8°F) is noted in Lavaltrie during the month of September.Humidity
In Lavaltrie, the average relative humidity in September is 77%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.9 days and typically collects 52mm (2.05") of precipitation.Snowfall
In Lavaltrie, snow does not fall in June through September.Daylight
In September, the average length of the day in Lavaltrie is 12h and 32min.On the first day of the month, sunrise is at 6:14 am and sunset at 7:30 pm. On the last day of September, in Lavaltrie, Canada, sunrise is at 6:51 am and sunset at 6:34 pm EDT.
Sunshine
The average sunshine in September in Lavaltrie is 8.8h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 3 in September interprets into the following advice:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lavaltrie, Canada
- Average high temperature in September: 20.5°C
The warmest month (with the highest average high temperature) is July (25.4°C).
The month with the lowest average high temperature is January (-6.2°C).
- Average low temperature in September: 11°C
The month with the highest average low temperature is July (15.4°C).
The coldest month (with the lowest average low temperature) is January (-13.3°C).
Average pressure in September
Lavaltrie, Canada
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is November (1017.7mbar).
The month with the lowest atmospheric pressure is June (1012.4mbar).
Average wind speed in September
Lavaltrie, Canada
- Average wind speed in September: 10.7km/h
The windiest month (with the highest average wind speed) is April (14km/h).
The calmest months (with the lowest average wind speed) are July, August and September (10.7km/h).
Average humidity in September
Lavaltrie, 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 (73%).
Average rainfall in September
Lavaltrie, Canada
- Average rainfall in September: 52mm
The wettest month (with the highest rainfall) is October (81mm).
The driest month (with the least rainfall) is September (52mm).
Average rainfall days in September
Lavaltrie, Canada
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in September
Lavaltrie, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is January (278mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Lavaltrie, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lavaltrie, Canada
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 48min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).
Average sunshine days in September
Lavaltrie, Canada
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is February (9.8 days).
Average UV index in September
Lavaltrie, 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 and December (UV index 1).
Average cloud cover in September
Lavaltrie, Canada
- Average cloud cover in September: 35
The months with the most cloud cover are January and February (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Lavaltrie, 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 and February (7km).
