September weather forecastGlencoe, IL
September
Weather in September
September, the first month of the autumn in Glencoe, is also an agreeable month, with an average temperature varying between 71.6°F (22°C) and 60.3°F (15.7°C).Temperature
Glencoe's September weather features a light decline in high-temperatures, reducing from a warm 78.1°F (25.6°C) in August to an agreeable 71.6°F (22°C). Nighttime temperature in Glencoe dips to a mean of 60.3°F (15.7°C) during September.Humidity
In Glencoe, the average relative humidity in September is 74%.Rainfall
In Glencoe, during September, the rain falls for 14.8 days and regularly aggregates up to 2.87" (73mm) of precipitation. In Glencoe, during the entire year, the rain falls for 164.7 days and collects up to 35.28" (896mm) of precipitation.Snowfall
In Glencoe, snow does not fall in June through September.Daylight
In Glencoe, Illinois, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:17 am and sunset at 7:24 pm. On the last day of September, in Glencoe, sunrise is at 6:47 am and sunset at 6:33 pm CDT.
Sunshine
In Glencoe, Illinois, the average sunshine in September is 9h.UV index
The average daily maximum UV index in September in Glencoe is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Glencoe, IL
- Average high temperature in September: 71.6°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in September: 60.3°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in September
Glencoe, 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
Glencoe, IL
- Average wind speed in September: 8.6mph
The windiest month (with the highest average wind speed) is January (11.5mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).
Average humidity in September
Glencoe, IL
- Average humidity in September: 74%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Glencoe, IL
- Average rainfall in September: 2.87"
The wettest months (with the highest rainfall) are May and June (4.57").
The driest month (with the least rainfall) is December (1.65").
Average rainfall days in September
Glencoe, IL
- Average rainfall days in September: 14.8 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (6.1 days).
Average snowfall in September
Glencoe, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.84").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Glencoe, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Glencoe, IL
- Average daylight in September: 12h and 30min
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 24min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Glencoe, IL
- Average sunshine days in September: 11.7 days
The month with the most sunshine days is November (15.5 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in September
Glencoe, IL
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Glencoe, IL
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Glencoe, IL
- 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).
