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
Glen Carbon's January weather, marked by an average high temperature of 37.4°F (3°C) and an average low temperature of 24.3°F (-4.3°C), is the coldest in the year.Humidity
In Glen Carbon, the average relative humidity in January is 76%.Rainfall
In January, the rain falls for 7.8 days. Throughout January, 2.2" (56mm) of precipitation is accumulated. Throughout the year, in Glen Carbon, there are 149.9 rainfall days, and 33.94" (862mm) of precipitation is accumulated.Snowfall
January through March, September, November and December are months with snowfall. January is the month with the most snowfall in Glen Carbon. Snow falls for 7 days and accumulates 2.13" (54mm) of snow.Daylight
The average length of the day in January is 9h and 49min.On the first day of January, sunrise is at 7:17 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:19 pm CST.
Sunshine
With an average of 4.5h of sunshine, January has the least sunshine of the year in Glen Carbon, Illinois.UV index
The months with the lowest UV index in Glen Carbon are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 2 during January translates into these guidelines:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Glen Carbon?
How cold is January in Glen Carbon?
What is the average humidity in January in Glen Carbon?
How much does it rain in Glen Carbon in January?
What is the snowiest month in Glen Carbon?
How many days does it snow in January in Glen Carbon?
How many hours of daylight does Glen Carbon have in January?
What time are sunrise and sunset in January in Glen Carbon?
What is the month with the least sunshine in Glen Carbon?
How long on average sun shines in January in Glen Carbon?
What is the month with the lowest UV index in Glen Carbon?
What is the UV index reading in January in Glen Carbon?
Average temperature in January
Glen Carbon, IL
- Average high temperature in January: 37.4°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in January: 24.3°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in January
Glen Carbon, IL
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Glen Carbon, IL
- Average wind speed in January: 9.5mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in January
Glen Carbon, IL
- Average humidity in January: 76%
The months with the highest relative humidity are May, July and August (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Glen Carbon, IL
- Average rainfall in January: 2.2"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (1.77").
Average rainfall days in January
Glen Carbon, IL
- Average rainfall days in January: 7.8 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in January
Glen Carbon, IL
- Average snowfall in January: 2.13"
The month with the highest snowfall is January (2.13").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in January
Glen Carbon, IL
- Average snowfall days in January: 7 days
The month with the highest number of snowfall days is January (7 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Glen Carbon, IL
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January: 4h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in January
Glen Carbon, IL
- Average sunshine days in January: 17 days
The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is May (11.6 days).
Average UV index in January
Glen Carbon, IL
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Glen Carbon, IL
- Average cloud cover in January: 51
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in January
Glen Carbon, IL
- Average visibility in January: 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).
Glen Carbon, Illinois, USA
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