September weather forecastKilbourne, IL
September
Weather in September
September, the first month of the autumn in Kilbourne, is also a moderately hot month, with an average temperature ranging between max 77.2°F (25.1°C) and min 58.5°F (14.7°C).Temperature
The advent of September signifies a minor shift to an average high-temperature of a still moderately hot 77.2°F (25.1°C), aligning closely with August. Kilbourne's temperature tends to fall to an average low of 58.5°F (14.7°C) during the nights of September.Humidity
In Kilbourne, the average relative humidity in September is 75%.Rainfall
In Kilbourne, in September, during 11.5 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. Throughout the year, there are 142.9 rainfall days, and 28.31" (719mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In Kilbourne, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:31 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:43 pm CDT.
Sunshine
In September, the average sunshine in Kilbourne is 9.4h.UV index
In Kilbourne, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kilbourne, IL
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in September
Kilbourne, IL
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Kilbourne, IL
- Average wind speed in September: 7.3mph
The windiest months (with the highest average wind speed) are January, February and April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in September
Kilbourne, 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 (71%).
Average rainfall in September
Kilbourne, IL
- Average rainfall in September: 2.6"
The wettest month (with the highest rainfall) is May (3.86").
The driest month (with the least rainfall) is December (1.38").
Average rainfall days in September
Kilbourne, IL
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in September
Kilbourne, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Kilbourne, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.2 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
Kilbourne, IL
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Kilbourne, IL
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (11.1 days).
Average UV index in September
Kilbourne, 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
Kilbourne, IL
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July, August and September (Cloud cover 29).
Average visibility in September
Kilbourne, IL
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
