October weather forecast
South Barrington, IL

Share

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.
Updated: Jul 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average October temperature?

In October, in South Barrington, the average high-temperature is 60.1°F (15.6°C), and the average low-temperature is 45.5°F (7.5°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in July is appraised at 87.8°F (31°C).

What is the least humid month?

October is the least humid month, with an average relative humidity of 73%.

What is the average humidity in October?

In South Barrington, the average relative humidity in October is 73%.

How many days does it rain in October?

In October, in South Barrington, the rain falls for 12.6 days. Throughout October, 2.13" (54mm) of precipitation is accumulated.

When does it start to snow?

October is the first month it typically snows. Throughout October, in the average 0.5 snowfall days, it receives 0.28" (7mm) of snow.

How many hours of daylight does South Barrington have in October?

In October, the average day length in South Barrington is 11h and 4min.

What time are sunrise and sunset in October?

In October, on the first day of the month, sunrise is at 6:50 am and sunset at 6:33 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:47 pm CDT.

How many hours of sunshine does South Barrington have in October?

In South Barrington, the average sunshine duration in October is 5.5h.

What is the UV index intensity in October?

In October, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
South Barrington, IL

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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 / Average sunshine in October - South Barrington, IL
  • Average daylight in October: 11h and 1min

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 3min

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 - 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 - 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 - 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 - 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).

South Barrington, Illinois, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location