September weather forecastCreston, IL
September
Weather in September
September, the first month of the autumn in Creston, is also a moderately hot month, with an average temperature ranging between min 54.5°F (12.5°C) and max 73.4°F (23°C).Temperature
Creston signifies an average high-temperature of a still moderately hot 73.4°F (23°C) in September, closely mirroring the 78.3°F (25.7°C) of August. An average low-temperature of 54.5°F (12.5°C) is observed during September nights.Humidity
In Creston, the average relative humidity in September is 79%.Rainfall
In Creston, in September, it is raining for 10.1 days, with typically 1.14" (29mm) of accumulated precipitation. In Creston, during the entire year, the rain falls for 124.5 days and collects up to 14.49" (368mm) of precipitation.Snowfall
In Creston, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:38 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September in Creston, Illinois, is 4. A UV Index reading of 3 to 5 represents a moderate health risk 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 heed. Individuals of lighter complexion can be burned in less than half an hour. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Creston, IL
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).
Average pressure in September
Creston, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Creston, IL
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Creston, IL
- Average humidity in September: 79%
The months with the highest relative humidity are January and July (85%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Creston, IL
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is June (2.13").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days in September
Creston, IL
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is June (16 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in September
Creston, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Creston, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Creston, 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 12min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is June (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Creston, IL
- Average sunshine days in September: 18.5 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
Creston, 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
Creston, IL
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in September
Creston, IL
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
