September weather forecastJanesville, MN
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Janesville, Minnesota, with an average temperature varying between 52.9°F (11.6°C) and 72.3°F (22.4°C).Temperature
The start of September involves a subtle temperature drop, shifting from a warm 77.7°F (25.4°C) in August to an agreeable 72.3°F (22.4°C). Janesville experiences an average low-temperature of 52.9°F (11.6°C) in month of September.Humidity
The average relative humidity in September is 76%.Rainfall
In September, the rain falls for 11.6 days. Throughout September, 2.05" (52mm) of precipitation is accumulated. In Janesville, Minnesota, during the entire year, the rain falls for 124.8 days and collects up to 24.25" (616mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Janesville, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:12 am and sunset at 6:56 pm CDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Take precautions - Protection against skin and eye damage is obliged. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Janesville, MN
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (21.2°F).
- Average low temperature in September: 52.9°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).
Average pressure in September
Janesville, 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
Janesville, MN
- Average wind speed in September: 8.4mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in September
Janesville, MN
- Average humidity in September: 76%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Janesville, MN
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is June (3.9").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in September
Janesville, MN
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is June (17.5 days).
The month with the least rainy days is February (1.7 days).
Average snowfall in September
Janesville, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Janesville, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Janesville, MN
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Janesville, MN
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in September
Janesville, MN
- Average UV index in September: 4
The months with the highest UV index are June and 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
Janesville, MN
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Janesville, MN
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
