September weather forecastOakbrook, KY
September
Weather in September
September, the first month of the autumn in Oakbrook, is also a moderately hot month, with an average temperature ranging between min 59°F (15°C) and max 77.9°F (25.5°C).Temperature
As Oakbrook enters September, the average high-temperature subtly lowers from the a moderately hot 83.8°F (28.8°C) of August to a still warm 77.9°F (25.5°C). Throughout September, Oakbrook experiences a low-temperature average of 59°F (15°C).Humidity
The months with the lowest humidity are August through October, with an average relative humidity of 74%.Rainfall
September is the month with the least rainfall. Rain falls for 12.4 days and accumulates 1.34" (34mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September in Oakbrook is 12h and 26min.On the first day of September, sunrise is at 7:08 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:22 pm EDT.
Sunshine
In Oakbrook, Kentucky, the average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Take necessary precautions - Defending against sun damage is advocated. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Oakbrook, KY
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in September: 59°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in September
Oakbrook, KY
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Oakbrook, KY
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Oakbrook, KY
- Average humidity in September: 74%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are August, September and October (74%).
Average rainfall in September
Oakbrook, KY
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in September
Oakbrook, KY
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in September
Oakbrook, KY
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.93").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Oakbrook, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.5 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
Oakbrook, KY
- Average daylight in September: 12h and 24min
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 30min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Oakbrook, KY
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is November (19.7 days).
The months with the least sunshine days are May and June (12 days).
Average UV index in September
Oakbrook, KY
- 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
Oakbrook, KY
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Oakbrook, KY
- 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).
