Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
A moderate decline in average high-temperatures is noted in September, moving from a moderately hot 78.1°F (25.6°C) in August to an agreeable 72.3°F (22.4°C). Throughout the month of September, Shirland witnesses an average temperature of 53.1°F (11.7°C).Humidity
In September, the average relative humidity is 80%.Rainfall
In September, in Shirland, the rain falls for 10.7 days. Throughout September, 1.22" (31mm) of precipitation is accumulated. Throughout the year, in Shirland, there are 122.2 rainfall days, and 16.42" (417mm) of precipitation is accumulated.Snowfall
In Shirland, 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 September in Shirland, Illinois, sunrise is at 6:22 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:39 pm CDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
In Shirland, Illinois, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: In September, an average UV index of 4 transforms into the following instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. When the Sun is at its strongest around midday, find shade and limit exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Shirland?
What is the average humidity in September in Shirland?
How many days does it rain in September in Shirland?
When it does not snow in Shirland?
Does it snow in Shirland in September?
What is the average length of the day in September in Shirland?
When are sunrise and sunset in September in Shirland?
How long on average sun shines in September in Shirland?
How high is the UV index in September in Shirland?
Average temperature in September
Shirland, IL
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in September: 53.1°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (12.7°F).
Average pressure in September
Shirland, 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 (29.91"Hg).
Average wind speed in September
Shirland, IL
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Shirland, IL
- Average humidity in September: 80%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall in September
Shirland, IL
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is June (2.28").
The driest months (with the least rainfall) are February and December (0.67").
Average rainfall days in September
Shirland, IL
- Average rainfall days in September: 10.7 days
The months with the highest number of rainy days are May and June (15.3 days).
The month with the least rainy days is January (3.1 days).
Average snowfall in September
Shirland, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Shirland, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.5 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
Shirland, IL
- Average daylight in September: 12h and 3min
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 6min).
- Average sunshine in September: 8h and 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 30min).
The months with the least sunshine are January and February (Average sunshine: 3h and 30min).
Average sunshine days in September
Shirland, IL
- Average sunshine days in September: 17 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is June (12.8 days).
Average UV index in September
Shirland, IL
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Shirland, IL
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is September (Cloud cover 35).
Average visibility in September
Shirland, IL
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Shirland, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location