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
September brings a slight decrease in temperature, down from 85.5°F (29.7°C) in August to a still warm 79.7°F (26.5°C). Evansville records a consistent low-temperature of 60.3°F (15.7°C) during September nights.Humidity
The average relative humidity in September is 74%.Rainfall
In Evansville, in September, it is raining for 11.8 days, with typically 1.57" (40mm) of accumulated precipitation. In Evansville, during the entire year, the rain falls for 138.9 days and collects up to 26.81" (681mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Evansville, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:30 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
The average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: A maximum UV index of 5 in September translates into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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 in Evansville?
How many hours of daylight does Evansville have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Evansville have in September?
How high is the UV index in September?
Average temperature in September
Evansville, IL
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°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
Evansville, 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
Evansville, IL
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in September
Evansville, 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
Evansville, IL
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is May (3.35").
The driest month (with the least rainfall) is February (1.42").
Average rainfall days in September
Evansville, IL
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in September
Evansville, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.01").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Evansville, IL
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (5.8 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
Evansville, IL
- Average daylight in September: 12h and 2min
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 36min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Evansville, IL
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in September
Evansville, IL
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Evansville, IL
- Average cloud cover in September: 28
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in September
Evansville, 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).
Evansville, Illinois, USA
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