October weather forecastSouth Barrington, IL
October
Weather in October
October, the same as September, in South Barrington, Illinois, is a moderate autumn month, with an average temperature ranging between max 60.1°F (15.6°C) and min 45.5°F (7.5°C).Temperature
The average high-temperature decreases in October, shifting from a moderately hot 73.4°F (23°C) in September to a mild 60.1°F (15.6°C). Throughout October, South Barrington encounters an average temperature drop to a frosty 45.5°F (7.5°C).Humidity
The least humid month is October, with an average relative humidity of 73%.Rainfall
In South Barrington, in October, it is raining for 12.6 days, with typically 2.13" (54mm) of accumulated precipitation. In South Barrington, during the entire year, the rain falls for 145.9 days and collects up to 24.72" (628mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 0.5 snowfall days, it receives 0.28" (7mm) of snow. In South Barrington, during the entire year, snow falls for 47.6 days and aggregates up to 15.83" (402mm) of snow.Daylight
The average length of the day in October is 11h and 4min.On the first day of the month, sunrise is at 6:50 am and sunset at 6:33 pm. On the last day of October, sunrise is at 7:25 am and sunset at 5:47 pm CDT.
Sunshine
In October, the average sunshine is 5.5h.UV index
In South Barrington, the average daily maximum UV index in October is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In October, the UV index of 2 transforms into the following advice:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
South Barrington, IL
- Average high temperature in October: 60.1°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 (27.9°F).
- Average low temperature in October: 45.5°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in October
South Barrington, IL
- Average pressure in October: 30"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
South Barrington, IL
- Average wind speed in October: 8.8mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in October
South Barrington, 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
South Barrington, IL
- Average rainfall in October: 2.13"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is December (1.14").
Average rainfall days in October
South Barrington, IL
- Average rainfall days in October: 12.6 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in October
South Barrington, IL
- Average snowfall in October: 0.28"
The month with the highest snowfall is February (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
South Barrington, IL
- Average snowfall days in October: 0.5 days
The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
South Barrington, 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 30min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in October
South Barrington, IL
- Average sunshine days in October: 14.7 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in October
South Barrington, IL
- Average UV index in October: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in October
South Barrington, IL
- Average cloud cover in October: 44
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July, August and September (Cloud cover 32).
Average visibility in October
South Barrington, 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).





