September weather forecastSolon Mills, IL
September
Weather in September
September, the first month of the autumn in Solon Mills, is still a pleasant month, with temperature in the range of an average high of 72°F (22.2°C) and an average low of 54.3°F (12.4°C).Temperature
The beginning of September brings a slight decrease in the average high-temperature, transitioning from a warm 77.5°F (25.3°C) in August to a pleasant 72°F (22.2°C). An average low-temperature of 54.3°F (12.4°C) is expected during September.Humidity
In September, the average relative humidity in Solon Mills is 81%.Rainfall
In Solon Mills, Illinois, during September, the rain falls for 12.3 days and regularly aggregates up to 1.61" (41mm) of precipitation. In Solon Mills, during the entire year, the rain falls for 138.1 days and collects up to 23.15" (588mm) of precipitation.Snowfall
In Solon Mills, snow does not fall in June through September.Daylight
In Solon Mills, the average length of the day in September is 12h and 28min.On the first day of September in Solon Mills, sunrise is at 6:19 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:35 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In Solon Mills, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Solon Mills, IL
- Average high temperature in September: 72°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in September: 54.3°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (14.2°F).
Average pressure in September
Solon Mills, IL
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Solon Mills, IL
- Average wind speed in September: 7.3mph
The windiest months (with the highest average wind speed) are January and February (10mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Solon Mills, IL
- Average humidity in September: 81%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April, October and November (77%).
Average rainfall in September
Solon Mills, IL
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is June (3.07").
The driest month (with the least rainfall) is December (0.94").
Average rainfall days in September
Solon Mills, IL
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is July (17.7 days).
The months with the least rainy days are January and February (3.8 days).
Average snowfall in September
Solon Mills, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Solon Mills, IL
- 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
Solon Mills, IL
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The months with the least sunshine are January and February (Average sunshine: 3h and 30min).
Average sunshine days in September
Solon Mills, IL
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is November (18 days).
The months with the least sunshine days are June and July (10.5 days).
Average UV index in September
Solon Mills, IL
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Solon Mills, IL
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in September
Solon Mills, IL
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, September, October, November and December (6mi).
The months with the lowest visibility are January, February and August (5mi).
