September weather forecastConcord, IL
September
Weather in September
September, the first month of the autumn in Concord, is still a warm month, with an average temperature varying between 77.7°F (25.4°C) and 58.6°F (14.8°C).Temperature
As Concord welcomes September, the average high-temperature stabilizes at a still warm 77.7°F (25.4°C), showing little deviation from August's 82.6°F (28.1°C). In Concord, the average temperature during the nights of September drops to a refreshing 58.6°F (14.8°C).Humidity
In Concord, the average relative humidity in September is 74%.Rainfall
In Concord, in September, it is raining for 11.7 days, with typically 2.64" (67mm) of accumulated precipitation. In Concord, during the entire year, the rain falls for 148.2 days and collects up to 29.37" (746mm) of precipitation.Snowfall
In Concord, Illinois, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 26min.On the first day of September in Concord, Illinois, sunrise is at 6:30 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:44 pm CDT.
Sunshine
In Concord, the average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index in Concord is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Exercise prevention - Warding off sunburn is urged. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Concord, IL
- Average high temperature in September: 77.7°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 58.6°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in September
Concord, IL
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Concord, IL
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in September
Concord, IL
- Average humidity in September: 74%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Concord, IL
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days in September
Concord, IL
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and February (7.1 days).
Average snowfall in September
Concord, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Concord, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.6 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
Concord, IL
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Concord, IL
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in September
Concord, IL
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Concord, IL
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).
Average visibility in September
Concord, IL
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
