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 marks a gentle change in average high-temperature, declining from August's moderately hot 24.4°C (75.9°F) to a pleasant 20.5°C (68.9°F). In Salaberry-de-Valleyfield, the average nighttime temperature during September is a fresh 11.1°C (52°F).Humidity
The average relative humidity in September is 78%.Rainfall
In Salaberry-de-Valleyfield, Canada, in September, during 11.4 rainfall days, 50mm (1.97") of precipitation is typically accumulated. Throughout the year, in Salaberry-de-Valleyfield, there are 138.5 rainfall days, and 712mm (28.03") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September in Salaberry-de-Valleyfield is 12h and 31min.On the first day of the month, sunrise is at 6:19 am and sunset at 7:33 pm. On the last day of September, in Salaberry-de-Valleyfield, sunrise is at 6:54 am and sunset at 6:38 pm EDT.
Sunshine
In Salaberry-de-Valleyfield, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September in Salaberry-de-Valleyfield, Canada, is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Salaberry-de-Valleyfield?
What is the average humidity in September in Salaberry-de-Valleyfield?
How many days does it rain in September in Salaberry-de-Valleyfield?
When it does not snow in Salaberry-de-Valleyfield?
What is the average length of the day in September in Salaberry-de-Valleyfield?
When are sunrise and sunset in September in Salaberry-de-Valleyfield?
How long on average sun shines in September in Salaberry-de-Valleyfield?
What is the UV index reading in September in Salaberry-de-Valleyfield?
Average temperature in September
Salaberry-de-Valleyfield, Canada
- Average high temperature in September: 20.5°C
The warmest month (with the highest average high temperature) is July (25.2°C).
The month with the lowest average high temperature is January (-5.8°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is July (15.7°C).
The coldest month (with the lowest average low temperature) is January (-13.1°C).
Average pressure in September
Salaberry-de-Valleyfield, Canada
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1012.4mbar).
Average wind speed in September
Salaberry-de-Valleyfield, Canada
- Average wind speed in September: 11km/h
The windiest month (with the highest average wind speed) is February (14.7km/h).
The calmest months (with the lowest average wind speed) are July and August (10.9km/h).
Average humidity in September
Salaberry-de-Valleyfield, Canada
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (90%).
The months with the lowest relative humidity are April and May (75%).
Average rainfall in September
Salaberry-de-Valleyfield, Canada
- Average rainfall in September: 50mm
The wettest month (with the highest rainfall) is May (75mm).
The driest month (with the least rainfall) is November (48mm).
Average rainfall days in September
Salaberry-de-Valleyfield, Canada
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in September
Salaberry-de-Valleyfield, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (208mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Salaberry-de-Valleyfield, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Salaberry-de-Valleyfield, 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 0min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).
Average sunshine days in September
Salaberry-de-Valleyfield, Canada
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (12.2 days).
Average UV index in September
Salaberry-de-Valleyfield, 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
Salaberry-de-Valleyfield, Canada
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in September
Salaberry-de-Valleyfield, 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).
