September weather forecastFrontenac, MN
September
Weather in September
September, the first month of the autumn in Frontenac, is still a pleasant month, with temperature in the range of an average high of 70.9°F (21.6°C) and an average low of 51.6°F (10.9°C).Temperature
September brings a slight decrease in temperature, down from a warm 77.2°F (25.1°C) in August to an agreeable 70.9°F (21.6°C). Frontenac's average low-temperature for the month of September records at a cool 51.6°F (10.9°C).Humidity
In September, the average relative humidity is 79%.Rainfall
In September, the rain falls for 12.4 days. Throughout September, 2.2" (56mm) of precipitation is accumulated. Throughout the year, there are 129.5 rainfall days, and 25.2" (640mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 30min.On the first day of September, sunrise is at 6:32 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:51 pm CDT.
Sunshine
In Frontenac, the average sunshine in September is 8.6h.UV index
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 exposure to the Sun's UV radiation for ordinary individuals.Note: The average daily UV index of 4 in September transforms into the following instructions:
Heed the precautions - Suggestions to avoid sunburn are made. When the Sun is at its strongest around midday, find shade and limit exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Frontenac, MN
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (20.5°F).
- Average low temperature in September: 51.6°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).
Average pressure in September
Frontenac, MN
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Frontenac, MN
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Frontenac, MN
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Frontenac, MN
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is June (4.57").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in September
Frontenac, MN
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is June (17.7 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in September
Frontenac, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Frontenac, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Frontenac, 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 6min).
Average sunshine days in September
Frontenac, MN
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in September
Frontenac, 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
Frontenac, MN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Frontenac, MN
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The month with the lowest visibility is January (4mi).
