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
The advent of September brings an average high-temperature of a still moderately hot 74.3°F (23.5°C), almost identical to the preceding month. September witnesses an average nighttime temperature of 55.8°F (13.2°C) in Earlville, Illinois.Humidity
In September, the average relative humidity is 79%.Rainfall
In Earlville, in September, during 8.8 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. Throughout the year, there are 109.6 rainfall days, and 10.31" (262mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:28 pm. On the last day of September, in Earlville, sunrise is at 6:52 am and sunset at 6:38 pm CDT.
Sunshine
In September, the average sunshine in Earlville is 8.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Earlville in September?
What is the average humidity in September in Earlville?
How many days does it rain in September in Earlville?
When it does not snow in Earlville?
Does it snow in Earlville in September?
How many hours of daylight does Earlville have in September?
When is the sunrise / sunset in September in Earlville?
How many hours of sunshine does Earlville have in September?
What is the UV index intensity in September in Earlville?
Average temperature in September
Earlville, IL
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in September: 55.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in September
Earlville, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Earlville, IL
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in September
Earlville, IL
- Average humidity in September: 79%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Earlville, IL
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is May (1.54").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in September
Earlville, IL
- Average rainfall days in September: 8.8 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (3.8 days).
Average snowfall in September
Earlville, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.38").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Earlville, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Earlville, 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: 8h and 4min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Earlville, IL
- Average sunshine days in September: 19.9 days
The months with the most sunshine days are January and December (21.3 days).
The month with the least sunshine days is May (14.2 days).
Average UV index in September
Earlville, IL
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Earlville, IL
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in September
Earlville, 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).
Earlville, Illinois, USA
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