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
Coal City's temperature records reveal January as the coldest month, marked by average highs of 29.7°F (-1.3°C) and lows of 17.8°F (-7.9°C).Humidity
The average relative humidity in January is 82%.Rainfall
In Coal City, in January, during 5.8 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. In Coal City, during the entire year, the rain falls for 160.4 days and collects up to 33.5" (851mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Coal City, in January, during 10.6 snowfall days, 3.74" (95mm) of snow is typically accumulated. In Coal City, during the entire year, snow falls for 38.7 days and aggregates up to 15.39" (391mm) of snow.Daylight
In Coal City, the average length of the day in January is 9h and 36min.On the first day of January, sunrise is at 7:18 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:07 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 3.9h of sunshine.UV index
In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In January, a daily UV index of 2 turns into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is January?
What is the average humidity in January?
How many days does it rain in January?
How many days does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January in Coal City?
What is the month with the least sunshine?
How long on average sun shines in January?
What is the UV index reading in January?
Average temperature in January
Coal City, IL
- Average high temperature in January: 29.7°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in January: 17.8°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in January
Coal City, IL
- Average pressure in January: 30.12"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Coal City, IL
- Average wind speed in January: 9.9mph
The windiest months (with the highest average wind speed) are January and April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in January
Coal City, IL
- Average humidity in January: 82%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Coal City, IL
- Average rainfall in January: 1.73"
The wettest month (with the highest rainfall) is May (4.57").
The driest months (with the least rainfall) are February and November (1.69").
Average rainfall days in January
Coal City, IL
- Average rainfall days in January: 5.8 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in January
Coal City, IL
- Average snowfall in January: 3.74"
The month with the highest snowfall is February (4.29").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Coal City, IL
- Average snowfall days in January: 10.6 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Coal City, IL
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 3h and 5min
The months with the most sunshine are June, July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in January
Coal City, IL
- Average sunshine days in January: 15.4 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (8.6 days).
Average UV index in January
Coal City, IL
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Coal City, IL
- Average cloud cover in January: 60
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in January
Coal City, IL
- Average visibility in January: 6mi
The months with the highest visibility are January, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are February, July and August (5mi).
Coal City, Illinois, USA
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