January weather forecastOld Mill Creek, IL
January
Weather in January
January, like December, is a freezing cold winter month in Old Mill Creek, Illinois, with temperature in the range of an average high of 27.9°F (-2.3°C) and an average low of 18.3°F (-7.6°C).Temperature
January proves to be the coldest month, recording an average maximum temperature of 27.9°F (-2.3°C) and a minimum temperature of 18.3°F (-7.6°C).Humidity
The most humid month in Old Mill Creek is January, with an average relative humidity of 83%.Rainfall
In January, in Old Mill Creek, Illinois, the rain falls for 6.4 days. Throughout January, 1.06" (27mm) of precipitation is accumulated. In Old Mill Creek, during the entire year, the rain falls for 142.5 days and collects up to 21.5" (546mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In January, in Old Mill Creek, Illinois, it is snowing for 12.4 days. Throughout January, 2.24" (57mm) of snow is accumulated. Throughout the year, there are 45.5 snowfall days, and 9.37" (238mm) of snow is accumulated.Daylight
In Old Mill Creek, the average length of the day in January is 9h and 30min.On the first day of January, sunrise is at 7:21 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:03 pm CST.
Sunshine
The month with the least sunshine in Old Mill Creek, Illinois, is January, with an average of 3.7h of sunshine.UV index
The months with the lowest UV index in Old Mill Creek are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: An average maximum UV index of 1 in January leads to these recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Old Mill Creek, IL
- Average high temperature in January: 27.9°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in January: 18.3°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in January
Old Mill Creek, IL
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Old Mill Creek, IL
- Average wind speed in January: 11.9mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in January
Old Mill Creek, IL
- Average humidity in January: 83%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in January
Old Mill Creek, IL
- Average rainfall in January: 1.06"
The wettest months (with the highest rainfall) are June and August (2.68").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days in January
Old Mill Creek, IL
- Average rainfall days in January: 6.4 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in January
Old Mill Creek, IL
- Average snowfall in January: 2.24"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Old Mill Creek, IL
- Average snowfall days in January: 12.4 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Old Mill Creek, IL
- Average daylight in January: 9h and 30min
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 6min).
- Average sunshine in January: 3h and 42min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in January
Old Mill Creek, IL
- Average sunshine days in January: 12.4 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in January
Old Mill Creek, IL
- Average UV index in January: 1
The months with the highest UV index are 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
Old Mill Creek, IL
- Average cloud cover in January: 61
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in January
Old Mill Creek, 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).





