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
As Auburn welcomes September, the average high-temperature is noted at a still warm 77.5°F (25.3°C), closely aligning with the preceding month. Auburn experiences a mean low-temperature of 58.8°F (14.9°C) during September.Humidity
The average relative humidity in September is 75%.Rainfall
In September, in Auburn, the rain falls for 9.1 days. Throughout September, 0.63" (16mm) of precipitation is accumulated. In Auburn, during the entire year, the rain falls for 104.2 days and collects up to 9.29" (236mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:54 am and sunset at 6:42 pm CDT.
Sunshine
The average sunshine in September is 9.3h.UV index
In Auburn, Illinois, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What is the usual temperature for Auburn in September?
What is the average humidity in September in Auburn?
How much does it rain in Auburn in September?
When it does not snow in Auburn?
How many hours of daylight does Auburn have in September?
What time are sunrise and sunset in September in Auburn?
How many hours of sunshine does Auburn have in September?
What is the UV index intensity in September in Auburn?
Average temperature in September
Auburn, IL
- Average high temperature in September: 77.5°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in September: 58.8°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 (21.4°F).
Average pressure in September
Auburn, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Auburn, IL
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in September
Auburn, IL
- Average humidity in September: 75%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Auburn, IL
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is June (1.22").
The driest month (with the least rainfall) is December (0.43").
Average rainfall days in September
Auburn, IL
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is January (4.4 days).
Average snowfall in September
Auburn, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.91").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Auburn, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.7 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
Auburn, IL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Auburn, IL
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is December (22.6 days).
The month with the least sunshine days is June (14 days).
Average UV index in September
Auburn, IL
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Auburn, IL
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are June and September (Cloud cover 29).
Average visibility in September
Auburn, 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).
Auburn, Illinois, USA
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