September weather forecastShale City, IL
September
Weather in September
The first month of the autumn, September, is still a warm month in Shale City, Illinois, with temperature in the range of an average low of 56.3°F (13.5°C) and an average high of 75.4°F (24.1°C).Temperature
Shale City observes a small decrease in the average high-temperature with the arrival of September, falling from August's warm 81°F (27.2°C) to a still moderately hot 75.4°F (24.1°C). In the month of September, the average temperature in Shale City, Illinois, dips to a refreshing 56.3°F (13.5°C) during the night.Humidity
The average relative humidity in September in Shale City is 76%.Rainfall
In Shale City, in September, during 9.7 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. Throughout the year, there are 121.3 rainfall days, and 17.72" (450mm) of precipitation is accumulated.Snowfall
In Shale City, Illinois, snow does not fall in May through September.Daylight
In Shale City, the average length of the day in September is 12h and 28min.On the first day of September in Shale City, sunrise is at 6:29 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:45 pm CDT.
Sunshine
In Shale City, the average sunshine in September is 9.5h.UV index
In September, the average daily maximum UV index in Shale City is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Shale City, IL
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in September
Shale City, IL
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Shale City, IL
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in September
Shale City, IL
- Average humidity in September: 76%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Shale City, IL
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in September
Shale City, IL
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in September
Shale City, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Shale City, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.8 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
Shale City, IL
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Shale City, IL
- Average sunshine days in September: 19 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in September
Shale City, IL
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Shale City, IL
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in September
Shale City, IL
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
