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
Atkinson notes an average high-temperature of a still moderately hot 75.4°F (24.1°C) in September, displaying minor variation from August. Atkinson encounters an average low-temperature of 56.3°F (13.5°C) during September nights.Humidity
In Atkinson, the average relative humidity in September is 76%.Rainfall
In Atkinson, during September, the rain falls for 9.7 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Atkinson, during the entire year, the rain falls for 118.8 days and collects up to 15.04" (382mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Atkinson, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:32 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:43 pm CDT.
Sunshine
In September, the average sunshine is 9.2h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A daily high UV index of 4 in September leads to these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Atkinson, IL
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (28°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°F).
Average pressure in September
Atkinson, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Atkinson, IL
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Atkinson, IL
- Average humidity in September: 76%
The months with the highest relative humidity are January and July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Atkinson, IL
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is May (2.48").
The driest months (with the least rainfall) are January and December (0.63").
Average rainfall days in September
Atkinson, IL
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in September
Atkinson, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.13").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Atkinson, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9 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
Atkinson, IL
- Average daylight in September: 12h and 3min
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 12min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Atkinson, IL
- Average sunshine days in September: 19 days
The month with the most sunshine days is December (20.9 days).
The month with the least sunshine days is June (12 days).
Average UV index in September
Atkinson, IL
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Atkinson, IL
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in September
Atkinson, 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).
Atkinson, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location