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
September's onset introduces a mild reduction in the average high-temperature, from a warm 79.3°F (26.3°C) in August to an agreeable 72.9°F (22.7°C). The month of September records an average low-temperature of 57.2°F (14°C).Humidity
In September, the average relative humidity in Kildeer, Illinois, is 77%.Rainfall
In Kildeer, in September, it is raining for 13.4 days, with typically 2.2" (56mm) of accumulated precipitation. In Kildeer, during the entire year, the rain falls for 163.1 days and collects up to 32.24" (819mm) of precipitation.Snowfall
June through September are months without snowfall in Kildeer.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 6:18 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:34 pm CDT.
Sunshine
In Kildeer, the average sunshine in September is 9h.UV index
In Kildeer, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 4 in September translates into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
What is the temperature in September in Kildeer?
What is the average humidity in September in Kildeer?
How much does it rain in Kildeer in September?
When it does not snow in Kildeer?
Does it snow in Kildeer in September?
How many hours of daylight does Kildeer have in September?
When is the sunrise / sunset in September in Kildeer?
How long on average sun shines in September in Kildeer?
What is the UV index intensity in September in Kildeer?
Average temperature in September
Kildeer, IL
- Average high temperature in September: 72.9°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in September: 57.2°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure in September
Kildeer, 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
Kildeer, IL
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
Kildeer, IL
- Average humidity in September: 77%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Kildeer, IL
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is June (4.13").
The driest month (with the least rainfall) is November (1.61").
Average rainfall days in September
Kildeer, IL
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in September
Kildeer, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.22").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Kildeer, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Kildeer, 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 12min).
- Average sunshine in September: 9h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Kildeer, IL
- Average sunshine days in September: 13.4 days
The month with the most sunshine days is November (15.5 days).
The month with the least sunshine days is June (8.4 days).
Average UV index in September
Kildeer, IL
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Kildeer, IL
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 31).
Average visibility in September
Kildeer, IL
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Kildeer, Illinois, USA
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