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
Weather in September
Temperature
As September commences, the average high-temperature subtly reduces, transitioning from a warm 25°C (77°F) in August to a pleasant 21.8°C (71.2°F). In Dunnville, September nights witness a steady temperature drop to a mild 14.2°C (57.6°F).Humidity
With an average relative humidity of 75%, September is the least humid month.Rainfall
The month with the least rainfall is September, when the rain falls for 14.8 days and typically collects 53mm (2.09") of precipitation.Snowfall
In Dunnville, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 29min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:52 pm. On the last day of September, sunrise is at 7:15 am and sunset at 7:00 pm EDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
The average daily maximum UV index in September in Dunnville is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Frequently asked questions
What is the average September temperature in Dunnville?
What is the least humid month in Dunnville?
What is the average humidity in September in Dunnville?
What is the driest month in Dunnville?
How much does it rain in Dunnville in September?
When it does not snow in Dunnville?
Does it snow in Dunnville in September?
What is the average length of the day in September in Dunnville?
When are sunrise and sunset in September in Dunnville?
How many hours of sunshine does Dunnville have in September?
What is the UV index reading in September in Dunnville?
Average temperature in September
Dunnville, Canada
- Average high temperature in September: 21.8°C
The warmest month (with the highest average high temperature) is July (25.7°C).
The month with the lowest average high temperature is January (-1.5°C).
- Average low temperature in September: 14.2°C
The month with the highest average low temperature is July (17.5°C).
The coldest month (with the lowest average low temperature) is January (-6.7°C).
Average pressure in September
Dunnville, Canada
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is November (1018.7mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).
Average wind speed in September
Dunnville, Canada
- Average wind speed in September: 12.9km/h
The windiest month (with the highest average wind speed) is January (19.6km/h).
The calmest month (with the lowest average wind speed) is July (11.6km/h).
Average humidity in September
Dunnville, Canada
- Average humidity in September: 75%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is September (75%).
Average rainfall in September
Dunnville, Canada
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is July (86mm).
The driest month (with the least rainfall) is September (53mm).
Average rainfall days in September
Dunnville, Canada
- Average rainfall days in September: 14.8 days
The month with the highest number of rainy days is July (18.7 days).
The months with the least rainy days are January and February (8.1 days).
Average snowfall in September
Dunnville, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (179mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Dunnville, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dunnville, Canada
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Dunnville, Canada
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is September (12.6 days).
The month with the least sunshine days is January (8.3 days).
Average UV index in September
Dunnville, 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
Dunnville, Canada
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Dunnville, Canada
- Average visibility in September: 10km
The month with the highest visibility is September (10km).
The months with the lowest visibility are January and February (8km).
Dunnville, Canada
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