October weather forecastGlen Ellyn, IL
October
Weather in October
October, like September, is another refreshing autumn month in Glen Ellyn, Illinois, with an average temperature fluctuating between 45.5°F (7.5°C) and 60.4°F (15.8°C).Temperature
The transition into October involves a decrease in the average high-temperature, falling from a moderately hot 73.6°F (23.1°C) in September to a mild 60.4°F (15.8°C). Glen Ellyn temperatures generally rest at a low of 45.5°F (7.5°C) during the October nights.Humidity
October is the least humid month in Glen Ellyn, Illinois, with an average relative humidity of 73%.Rainfall
In October, the rain falls for 13.9 days. Throughout October, 2.83" (72mm) of precipitation is accumulated. In Glen Ellyn, during the entire year, the rain falls for 164.3 days and collects up to 33.78" (858mm) of precipitation.Snowfall
Months with snowfall in Glen Ellyn are January through May, October through December. October is the first month it typically snows in Glen Ellyn. Throughout October, in the average 0.5 snowfall days, it receives 0.35" (9mm) of snow. In Glen Ellyn, during the entire year, snow falls for 47 days and aggregates up to 20.2" (513mm) of snow.Daylight
In October, the average length of the day is 11h and 4min.On the first day of October in Glen Ellyn, sunrise is at 6:49 am and sunset at 6:33 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:47 pm CDT.
Sunshine
In October, the average sunshine is 5.6h.UV index
In Glen Ellyn, the average daily maximum UV index in October is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 2 in October interprets into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Glen Ellyn, IL
- Average high temperature in October: 60.4°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in October: 45.5°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in October
Glen Ellyn, IL
- Average pressure in October: 30.01"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 October
Glen Ellyn, IL
- Average wind speed in October: 8.7mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in October
Glen Ellyn, IL
- Average humidity in October: 73%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall in October
Glen Ellyn, IL
- Average rainfall in October: 2.83"
The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are November and December (1.65").
Average rainfall days in October
Glen Ellyn, IL
- Average rainfall days in October: 13.9 days
The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in October
Glen Ellyn, IL
- Average snowfall in October: 0.35"
The month with the highest snowfall is January (5.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Glen Ellyn, IL
- Average snowfall days in October: 0.5 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 October /
Average sunshine in October
Glen Ellyn, IL
- Average daylight in October: 11h and 6min
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 October: 5h and 36min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in October
Glen Ellyn, IL
- Average sunshine days in October: 13.8 days
The month with the most sunshine days is November (16.1 days).
The month with the least sunshine days is July (8.2 days).
Average UV index in October
Glen Ellyn, IL
- Average UV index in October: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in October
Glen Ellyn, IL
- Average cloud cover in October: 42
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in October
Glen Ellyn, IL
- Average visibility in October: 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).
