Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September is characterized by a mild reduction in the average high-temperature, from a warm 79°F (26.1°C) in August to a pleasant 73°F (22.8°C). Throughout September, a steady low-temperature average of 55.9°F (13.3°C) is noted.Humidity
In South Elgin, the average relative humidity in September is 78%.Rainfall
In South Elgin, in September, during 12.5 rainfall days, 1.69" (43mm) of precipitation is typically accumulated. Throughout the year, there are 149.2 rainfall days, and 24.02" (610mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In South Elgin, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:19 am and sunset at 7:26 pm. On the last day of September, sunrise is at 6:49 am and sunset at 6:35 pm CDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Exercise prevention - Warding off sunburn is urged. It's recommended to limit sun exposure when its radiation is at its peak during midday. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for South Elgin in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does South Elgin have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does South Elgin have in September?
How high is the UV index in September?
Average temperature in September
South Elgin, IL
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in September: 55.9°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average pressure in September
South Elgin, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
South Elgin, IL
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
South Elgin, IL
- Average humidity in September: 78%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
South Elgin, IL
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is December (1.1").
Average rainfall days in September
South Elgin, IL
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in September
South Elgin, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
South Elgin, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
South Elgin, IL
- Average daylight in September: 12h and 3min
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 12min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
South Elgin, IL
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in September
South Elgin, IL
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
South Elgin, IL
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in September
South Elgin, IL
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
South Elgin, Illinois, USA
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