September weather forecastStickney, IL
September
Weather in September
September, the first month of the autumn in Stickney, is also an agreeable month, with an average temperature fluctuating between 72.9°F (22.7°C) and 59.5°F (15.3°C).Temperature
In Stickney, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's warm 79.3°F (26.3°C) to an agreeable 72.9°F (22.7°C). In Stickney, in September, the average low-temperature is a refreshing 59.5°F (15.3°C).Humidity
In September, the average relative humidity in Stickney, Illinois, is 74%.Rainfall
In Stickney, during September, the rain falls for 7.5 days and regularly aggregates up to 0.51" (13mm) of precipitation. In Stickney, during the entire year, the rain falls for 92 days and collects up to 7.4" (188mm) of precipitation.Snowfall
In Stickney, Illinois, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:17 am and sunset at 7:24 pm. On the last day of September, sunrise is at 6:47 am and sunset at 6:33 pm CDT.
Sunshine
In Stickney, the average sunshine in September is 9.1h.UV index
In Stickney, Illinois, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: A typical high UV index of 4 in September suggests the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Stickney, IL
- Average high temperature in September: 72.9°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in September: 59.5°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in September
Stickney, 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
Stickney, IL
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in September
Stickney, IL
- Average humidity in September: 74%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Stickney, IL
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is May (1.1").
The driest months (with the least rainfall) are February, March, November and December (0.39").
Average rainfall days in September
Stickney, IL
- Average rainfall days in September: 7.5 days
The month with the highest number of rainy days is June (11.7 days).
The month with the least rainy days is January (3.1 days).
Average snowfall in September
Stickney, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Stickney, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.3 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
Stickney, 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: 9h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Stickney, IL
- Average sunshine days in September: 19.9 days
The month with the most sunshine days is December (23.7 days).
The month with the least sunshine days is June (14.3 days).
Average UV index in September
Stickney, IL
- Average UV index in September: 4
The months with the highest UV index are June, 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
Stickney, IL
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Stickney, IL
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
