September weather forecastBelleville, Canada
September
Weather in September
September, the first month of the autumn in Belleville, is also an agreeable month, with an average temperature fluctuating between 13°C (55.4°F) and 21°C (69.8°F).Temperature
Belleville's progression into September involves a gentle drop in the average high-temperature, from a warm 24.7°C (76.5°F) in August to a pleasant 21°C (69.8°F). In Belleville, an average temperature of 13°C (55.4°F) is noted during September nights.Humidity
The months with the lowest humidity are April, May, July through September, with an average relative humidity of 75%.Rainfall
In Belleville, in September, it is raining for 13.1 days, with typically 43mm (1.69") of accumulated precipitation. In Belleville, Canada, during the entire year, the rain falls for 145 days and collects up to 595mm (23.43") of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Belleville, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:45 pm. On the last day of September, sunrise is at 7:06 am and sunset at 6:51 pm EDT.
Sunshine
In Belleville, the average sunshine in September is 9.6h.UV index
In Belleville, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A typical high UV index of 4 in September suggests the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Belleville, Canada
- Average high temperature in September: 21°C
The warmest month (with the highest average high temperature) is July (25.5°C).
The month with the lowest average high temperature is January (-3°C).
- Average low temperature in September: 13°C
The month with the highest average low temperature is July (16.8°C).
The coldest month (with the lowest average low temperature) is January (-9°C).
Average pressure in September
Belleville, Canada
- Average pressure in September: 1017.1mbar
The months with the highest atmospheric pressure are March and November (1018.1mbar).
The month with the lowest atmospheric pressure is June (1012.8mbar).
Average wind speed in September
Belleville, Canada
- Average wind speed in September: 12.4km/h
The windiest month (with the highest average wind speed) is January (16.4km/h).
The calmest month (with the lowest average wind speed) is July (11.1km/h).
Average humidity in September
Belleville, Canada
- Average humidity in September: 75%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April, May, July, August and September (75%).
Average rainfall in September
Belleville, Canada
- Average rainfall in September: 43mm
The wettest month (with the highest rainfall) is October (76mm).
The driest month (with the least rainfall) is February (36mm).
Average rainfall days in September
Belleville, Canada
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is August (16.2 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in September
Belleville, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is December (105mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Belleville, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Belleville, Canada
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Belleville, Canada
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is March (15.9 days).
The month with the least sunshine days is August (12.9 days).
Average UV index in September
Belleville, Canada
- Average UV index in September: 4
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
Belleville, Canada
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Belleville, Canada
- Average visibility in September: 10km
The months with the highest visibility are July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (9km).
