Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January, having an average high-temperature of 27.9°F (-2.3°C) and an average low-temperature of 16.5°F (-8.6°C), is the coldest month.Humidity
The months with the highest humidity are January and February, with an average relative humidity of 83%.Rainfall
In South Barrington, Illinois, during January, the rain falls for 6 days and regularly aggregates up to 1.38" (35mm) of 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
January through May, October through December are months with snowfall. In South Barrington, in January, snow falls for 12.7 days, with typically accumulated 3.86" (98mm) 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
In South Barrington, the average length of the day in January is 9h and 32min.On the first day of the month, sunrise is at 7:20 am and sunset at 4:31 pm. On the last day of January, sunrise is at 7:06 am and sunset at 5:05 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 3.6h of sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: During January, 1 as the daily maximum UV index converts into the following advice:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
How many days does it rain in January?
How many days does it snow in January?
How many hours of daylight does South Barrington have in January?
What time are sunrise and sunset in January in South Barrington?
What is the month with the least sunshine?
How long on average sun shines in January in South Barrington?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
South Barrington, IL
- Average high temperature in January: 27.9°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 January: 16.5°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 January
South Barrington, IL
- Average pressure in January: 30.11"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 January
South Barrington, IL
- Average wind speed in January: 9.9mph
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 January
South Barrington, IL
- Average humidity in January: 83%
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 January
South Barrington, IL
- Average rainfall in January: 1.38"
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 January
South Barrington, IL
- Average rainfall days in January: 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 January
South Barrington, IL
- Average snowfall in January: 3.86"
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 January
South Barrington, IL
- Average snowfall days in January: 12.7 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 January /
Average sunshine in January
South Barrington, IL
- Average daylight in January: 9h 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 January: 3h and 4min
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 January
South Barrington, IL
- Average sunshine days in January: 14.1 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 January
South Barrington, IL
- Average UV index in January: 1
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 January
South Barrington, IL
- Average cloud cover in January: 62
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 January
South Barrington, IL
- Average visibility in January: 5mi
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
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