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 high-temperature average in September for Stoneyville is a still moderately hot 74.5°F (23.6°C), staying closely aligned with August's conditions. During September, the temperature in Stoneyville is averaged to a low of 56.1°F (13.4°C) at night.Humidity
The average relative humidity in September is 78%.Rainfall
In Stoneyville, in September, during 13.4 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. Throughout the year, there are 166.3 rainfall days, and 35.35" (898mm) of precipitation is accumulated.Snowfall
In Stoneyville, snow does not fall in May through September.Daylight
In September, the average length of the day in Stoneyville, Illinois, is 12h and 28min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:27 pm. On the last day of September, in Stoneyville, sunrise is at 6:51 am and sunset at 6:38 pm CDT.
Sunshine
In Stoneyville, the average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
What are September temperatures in Stoneyville?
What is the average humidity in September in Stoneyville?
How much does it rain in Stoneyville in September?
When it does not snow in Stoneyville?
Does it snow in Stoneyville in September?
How many hours of daylight does Stoneyville have in September?
When is the sunrise / sunset in September in Stoneyville?
How many hours of sunshine does Stoneyville have in September?
What is the UV index reading in September in Stoneyville?
Average temperature in September
Stoneyville, IL
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in September: 56.1°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in September
Stoneyville, 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 (29.92"Hg).
Average wind speed in September
Stoneyville, IL
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
Stoneyville, IL
- Average humidity in September: 78%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Stoneyville, IL
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is May (5").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days in September
Stoneyville, IL
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is July (19.9 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in September
Stoneyville, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.08").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Stoneyville, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.9 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
Stoneyville, 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 18min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Stoneyville, IL
- Average sunshine days in September: 13.2 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in September
Stoneyville, 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
Stoneyville, IL
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in September
Stoneyville, IL
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Stoneyville, Illinois, USA
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