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
Start of September brings a slight shift in the average high-temperature, dipping a bit from August's 79.9°F (26.6°C) to a still moderately hot 73.6°F (23.1°C). During the month of September, an average low-temperature of 59.2°F (15.1°C) is recorded.Humidity
In Evergreen Park, the average relative humidity in September is 75%.Rainfall
In Evergreen Park, Illinois, in September, it is raining for 13.5 days, with typically 1.97" (50mm) of accumulated precipitation. In Evergreen Park, during the entire year, the rain falls for 147.7 days and collects up to 23.62" (600mm) of precipitation.Snowfall
In Evergreen Park, 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 the month, sunrise is at 6:17 am and sunset at 7:23 pm. On the last day of September, sunrise is at 6:47 am and sunset at 6:33 pm CDT.
Sunshine
In Evergreen Park, the average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index in Evergreen Park is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Evergreen Park in September?
What is the average humidity in September in Evergreen Park?
How much does it rain in Evergreen Park in September?
When it does not snow in Evergreen Park?
Does it snow in Evergreen Park in September?
What is the average length of the day in September in Evergreen Park?
When are sunrise and sunset in September in Evergreen Park?
How many hours of sunshine does Evergreen Park have in September?
How high is the UV index in September in Evergreen Park?
Average temperature in September
Evergreen Park, IL
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in September: 59.2°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in September
Evergreen Park, 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 (29.92"Hg).
Average wind speed in September
Evergreen Park, IL
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in September
Evergreen Park, IL
- Average humidity in September: 75%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Evergreen Park, IL
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is December (1.02").
Average rainfall days in September
Evergreen Park, IL
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in September
Evergreen Park, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.07").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Evergreen Park, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.8 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
Evergreen Park, 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 12min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Evergreen Park, IL
- Average sunshine days in September: 13 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in September
Evergreen Park, IL
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Evergreen Park, IL
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Evergreen Park, 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).
Evergreen Park, Illinois, USA
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