September weather forecastCicero, IL
September
Weather in September
September marks the gradual transition from the hot summer months to the slightly cooler autumn season in Cicero. The decrease in temperature becomes evident as the month progresses. Autumn colors start to peak through the summer greens, painting a beautiful landscape. Despite the temperature drop, the city continues to enjoy ample sunshine with the UV Index dropping to four. Harvesting events and fall festivals hence begin to dominate the city's calendar.Temperature
September heralds a minor drop in average high-temperature, sliding from August's warm 79°F (26.1°C) to a pleasant 72.3°F (22.4°C). Throughout September, an average low-temperature of 60.4°F (15.8°C) is experienced.Humidity
The average relative humidity in September is 74%.Rainfall
In Cicero, in September, during 11.2 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, there are 121.4 rainfall days, and 11.85" (301mm) of precipitation is accumulated.Snowfall
In Cicero, snow does not fall in May through September.Daylight
In Cicero, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:17 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:33 pm CDT.
Sunshine
In September, the average sunshine is 9h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. It's recommended to limit sun exposure when its radiation is at its peak during 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
Cicero, IL
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in September: 60.4°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in September
Cicero, 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
Cicero, IL
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Cicero, IL
- Average humidity in September: 74%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Cicero, IL
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is May (1.69").
The driest month (with the least rainfall) is December (0.47").
Average rainfall days in September
Cicero, IL
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is July (14.7 days).
The month with the least rainy days is February (4 days).
Average snowfall in September
Cicero, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.54").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Cicero, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.4 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
Cicero, 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 0min
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
Cicero, IL
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is December (19.9 days).
The months with the least sunshine days are June and July (12.5 days).
Average UV index in September
Cicero, 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
Cicero, IL
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in September
Cicero, 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).
