September weather forecastCopper Cliff, Canada
September
Weather in September
September, the first month of the autumn in Copper Cliff, is also an enjoyable month, with an average temperature ranging between max 18.7°C (65.7°F) and min 8.4°C (47.1°F).Temperature
The onset of September results in a small decrease in the average high-temperature, moderately receding from a moderately hot 23.1°C (73.6°F) in August to a refreshing 18.7°C (65.7°F). Throughout September, an average low-temperature of 8.4°C (47.1°F) is experienced in Copper Cliff.Humidity
In September, the average relative humidity in Copper Cliff is 79%.Rainfall
In Copper Cliff, in September, it is raining for 11.1 days, with typically 40mm (1.57") of accumulated precipitation. Throughout the year, in Copper Cliff, there are 108.1 rainfall days, and 474mm (18.66") of precipitation is accumulated.Snowfall
In Copper Cliff, Canada, snow does not fall in June through September.Daylight
The average length of the day in September in Copper Cliff, Canada, is 12h and 32min.On the first day of September, sunrise is at 6:45 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:05 pm EDT.
Sunshine
The average sunshine in September in Copper Cliff is 8h.UV index
In Copper Cliff, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Copper Cliff, Canada
- Average high temperature in September: 18.7°C
The warmest month (with the highest average high temperature) is July (24.5°C).
The month with the lowest average high temperature is January (-8°C).
- Average low temperature in September: 8.4°C
The month with the highest average low temperature is July (12.7°C).
The coldest month (with the lowest average low temperature) is January (-15.9°C).
Average pressure in September
Copper Cliff, Canada
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is March (1018.8mbar).
The month with the lowest atmospheric pressure is June (1012.8mbar).
Average wind speed in September
Copper Cliff, Canada
- Average wind speed in September: 10.4km/h
The windiest month (with the highest average wind speed) is February (12.6km/h).
The calmest months (with the lowest average wind speed) are June and August (10.1km/h).
Average humidity in September
Copper Cliff, Canada
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (93%).
The month with the lowest relative humidity is May (68%).
Average rainfall in September
Copper Cliff, Canada
- Average rainfall in September: 40mm
The wettest month (with the highest rainfall) is October (65mm).
The driest months (with the least rainfall) are February and December (27mm).
Average rainfall days in September
Copper Cliff, Canada
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is October (13.7 days).
The month with the least rainy days is January (2.4 days).
Average snowfall in September
Copper Cliff, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is January (179mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Copper Cliff, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Copper Cliff, Canada
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 2h and 0min).
Average sunshine days in September
Copper Cliff, Canada
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is February (12.7 days).
Average UV index in September
Copper Cliff, 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, February, March, November and December (UV index 1).
Average cloud cover in September
Copper Cliff, Canada
- Average cloud cover in September: 43
The month with the most cloud cover is January (Cloud cover 79).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in September
Copper Cliff, Canada
- Average visibility in September: 8km
The months with the highest visibility are May, June and July (9km).
The month with the lowest visibility is January (6km).
