September weather forecastNew Athens, IL
September
Weather in September
The first month of the autumn, September, is still a warm month in New Athens, Illinois, with temperature in the range of an average low of 60.3°F (15.7°C) and an average high of 79.7°F (26.5°C).Temperature
The onset of September notes an average high-temperature of a still warm 79.7°F (26.5°C), subtly shifted from August's 84.7°F (29.3°C). Throughout September, New Athens records an average temperature of 60.3°F (15.7°C) at night.Humidity
In New Athens, the average relative humidity in September is 74%.Rainfall
In September, in New Athens, Illinois, the rain falls for 12.2 days. Throughout September, 2.01" (51mm) of precipitation is accumulated. Throughout the year, there are 154.1 rainfall days, and 35.28" (896mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September, sunrise is at 6:29 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:43 pm CDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 5 in September translates into this advice:
Take necessary precautions - Defending against sun damage is advocated. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
New Athens, IL
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in September: 60.3°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in September
New Athens, IL
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
New Athens, IL
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in September
New Athens, IL
- Average humidity in September: 74%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
New Athens, IL
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.85").
Average rainfall days in September
New Athens, IL
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in September
New Athens, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.24").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
New Athens, IL
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
New Athens, IL
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in September
New Athens, IL
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in September
New Athens, 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
New Athens, IL
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 27).
Average visibility in September
New Athens, 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).
