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 August transitions into September, Woodstock sees a gentle drop in the average high-temperature, transitioning from a moderately hot 77.9°F (25.5°C) to a pleasant 72.1°F (22.3°C). In Woodstock, the average nighttime temperature during September is a fresh 54.1°F (12.3°C).Humidity
The average relative humidity in September in Woodstock is 81%.Rainfall
In September, the rain falls for 12.5 days. Throughout September, 1.61" (41mm) of precipitation is accumulated. In Woodstock, during the entire year, the rain falls for 146.8 days and collects up to 22.83" (580mm) of precipitation.Snowfall
June through September are months without snowfall in Woodstock, Illinois.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:19 am and sunset at 7:27 pm. On the last day of September, in Woodstock, sunrise is at 6:50 am and sunset at 6:36 pm CDT.
Sunshine
In September, the average sunshine in Woodstock is 8.5h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 4 suggests these recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Woodstock?
What is the average humidity in September in Woodstock?
How many days does it rain in September in Woodstock?
When it does not snow in Woodstock?
Does it snow in Woodstock in September?
How many hours of daylight does Woodstock have in September?
When are sunrise and sunset in September in Woodstock?
How long on average sun shines in September in Woodstock?
What is the UV index intensity in September in Woodstock?
Average temperature in September
Woodstock, IL
- Average high temperature in September: 72.1°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure in September
Woodstock, 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
Woodstock, IL
- Average wind speed in September: 7.1mph
The windiest months (with the highest average wind speed) are January, February and April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
Woodstock, IL
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in September
Woodstock, IL
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is December (1.02").
Average rainfall days in September
Woodstock, IL
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in September
Woodstock, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.7").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Woodstock, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Woodstock, 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 6min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Woodstock, IL
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (10 days).
Average UV index in September
Woodstock, IL
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Woodstock, IL
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in September
Woodstock, IL
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Woodstock, Illinois, USA
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