September weather forecastSmiths Falls, Canada
September
Weather in September
September, the first month of the autumn in Smiths Falls, is still a pleasant month, with an average temperature fluctuating between 20.7°C (69.3°F) and 10.7°C (51.3°F).Temperature
In the transition to September, Smiths Falls observes a minor drop in the average high-temperature, shifting from a moderately hot 24.4°C (75.9°F) in August to an agreeable 20.7°C (69.3°F). Throughout the nights in September, an average low-temperature of 10.7°C (51.3°F) is noted in Smiths Falls.Humidity
The average relative humidity in September is 79%.Rainfall
In Smiths Falls, in September, during 11.7 rainfall days, 45mm (1.77") of precipitation is typically accumulated. In Smiths Falls, during the entire year, the rain falls for 141.7 days and collects up to 669mm (26.34") of precipitation.Snowfall
June through September are months without snowfall in Smiths Falls.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:45 pm EDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
In September, the average daily maximum UV index in Smiths Falls, Canada, is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 3 during September translates into these guidelines:
Put precautions into practice - Protective measures against sun-induced damage are advised. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Smiths Falls, Canada
- Average high temperature in September: 20.7°C
The warmest month (with the highest average high temperature) is July (25.1°C).
The month with the lowest average high temperature is January (-4.4°C).
- Average low temperature in September: 10.7°C
The month with the highest average low temperature is July (15.3°C).
The coldest month (with the lowest average low temperature) is January (-11.8°C).
Average pressure in September
Smiths Falls, Canada
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is November (1018.2mbar).
The month with the lowest atmospheric pressure is June (1012.7mbar).
Average wind speed in September
Smiths Falls, Canada
- Average wind speed in September: 11.1km/h
The windiest month (with the highest average wind speed) is February (14.9km/h).
The calmest months (with the lowest average wind speed) are July and August (10.6km/h).
Average humidity in September
Smiths Falls, Canada
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Smiths Falls, Canada
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is August (70mm).
The driest months (with the least rainfall) are March and November (43mm).
Average rainfall days in September
Smiths Falls, Canada
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is January (5 days).
Average snowfall in September
Smiths Falls, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (157mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Smiths Falls, Canada
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Smiths Falls, 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 6min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 42min).
Average sunshine days in September
Smiths Falls, Canada
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in September
Smiths Falls, Canada
- Average UV index in September: 3
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
Smiths Falls, Canada
- Average cloud cover in September: 35
The month with the most cloud cover is February (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Smiths Falls, 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).
