September weather forecastCannon Falls, MN
September
Weather in September
September, the first month of the autumn in Cannon Falls, is still a pleasant month, with an average temperature ranging between min 52.2°F (11.2°C) and max 71.1°F (21.7°C).Temperature
September's arrival signals a moderate reduction in the average high-temperature, easing from a moderately hot 77.7°F (25.4°C) in August to a pleasant 71.1°F (21.7°C). During September, the temperature is averaged to a low of 52.2°F (11.2°C) at night.Humidity
The average relative humidity in September is 78%.Rainfall
In Cannon Falls, during September, the rain falls for 12.5 days and regularly aggregates up to 2.13" (54mm) of precipitation. In Cannon Falls, during the entire year, the rain falls for 128.1 days and collects up to 25.16" (639mm) of precipitation.Snowfall
June through September are months without snowfall in Cannon Falls.Daylight
In Cannon Falls, the average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:35 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:53 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cannon Falls, MN
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in September
Cannon Falls, MN
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Cannon Falls, MN
- Average wind speed in September: 7.9mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in September
Cannon Falls, MN
- Average humidity in September: 78%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Cannon Falls, MN
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is June (4.37").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in September
Cannon Falls, MN
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is June (17.6 days).
The months with the least rainy days are January and February (2.5 days).
Average snowfall in September
Cannon Falls, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.93").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Cannon Falls, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Cannon Falls, MN
- 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: 8h and 36min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Cannon Falls, MN
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in September
Cannon Falls, MN
- 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, February, November and December (UV index 1).
Average cloud cover in September
Cannon Falls, MN
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Cannon Falls, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
