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's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a moderately hot 24.2°C (75.6°F) in August to an agreeable 20.1°C (68.2°F). During the month of September, Saint-Charles-sur-Richelieu experiences a steady low-temperature average of 10.2°C (50.4°F).Humidity
In Saint-Charles-sur-Richelieu, the average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall in Saint-Charles-sur-Richelieu. Rain falls for 13.2 days and accumulates 54mm (2.13") of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Saint-Charles-sur-Richelieu is 12h and 31min.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, sunrise is at 6:50 am and sunset at 6:34 pm EDT.
Sunshine
In Saint-Charles-sur-Richelieu, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 3 suggests these recommendations:
Act with care - The need to guard against sun damage is communicated. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Saint-Charles-sur-Richelieu?
What is the average humidity in September in Saint-Charles-sur-Richelieu?
What is the driest month in Saint-Charles-sur-Richelieu?
How many days does it rain in September in Saint-Charles-sur-Richelieu?
When it does not snow in Saint-Charles-sur-Richelieu?
Does it snow in Saint-Charles-sur-Richelieu in September?
What is the average length of the day in September in Saint-Charles-sur-Richelieu?
When is the sunrise / sunset in September in Saint-Charles-sur-Richelieu?
How many hours of sunshine does Saint-Charles-sur-Richelieu have in September?
What is the UV index reading in September in Saint-Charles-sur-Richelieu?
Average temperature in September
Saint-Charles-sur-Richelieu, Canada
- Average high temperature in September: 20.1°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 (-5.9°C).
- Average low temperature in September: 10.2°C
The month with the highest average low temperature is July (15°C).
The coldest month (with the lowest average low temperature) is January (-13.1°C).
Average pressure in September
Saint-Charles-sur-Richelieu, 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
Saint-Charles-sur-Richelieu, Canada
- Average wind speed in September: 10.6km/h
The windiest month (with the highest average wind speed) is April (13.3km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).
Average humidity in September
Saint-Charles-sur-Richelieu, Canada
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Saint-Charles-sur-Richelieu, Canada
- Average rainfall in September: 54mm
The wettest months (with the highest rainfall) are May and August (82mm).
The driest month (with the least rainfall) is September (54mm).
Average rainfall days in September
Saint-Charles-sur-Richelieu, Canada
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in September
Saint-Charles-sur-Richelieu, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (298mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Saint-Charles-sur-Richelieu, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (19.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Saint-Charles-sur-Richelieu, 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 3min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 36min).
Average sunshine days in September
Saint-Charles-sur-Richelieu, Canada
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is September (15.2 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in September
Saint-Charles-sur-Richelieu, 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
Saint-Charles-sur-Richelieu, Canada
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Saint-Charles-sur-Richelieu, Canada
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, March and December (7km).
