January weather forecastSterling, IL
January
Weather in January
January, the same as December, in Sterling, Illinois, is a freezing cold winter month, with temperature in the range of an average high of 27.7°F (-2.4°C) and an average low of 14.9°F (-9.5°C).Temperature
Sterling reaches its lowest average temperatures in January, measuring 27.7°F (-2.4°C) at the peak and 14.9°F (-9.5°C) at the lowest.Humidity
The months with the highest humidity are January and July, with an average relative humidity of 85%.Rainfall
January and February are months with the least rain when the rain falls for 4.8 days and typically aggregates up to 0.75" (19mm) of rain.Snowfall
Months with snowfall in Sterling are January through April, October through December. The month with the most snowfall in Sterling is January, when snow falls for 10.2 days and typically aggregates up to 2.56" (65mm) of snow.Daylight
In January, the average length of the day is 9h and 34min.On the first day of January, sunrise is at 7:26 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:12 pm CST.
Sunshine
January has the least sunshine of the year in Sterling, with an average of 3.8h of sunshine.UV index
The average daily maximum UV index in January in Sterling is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the average person.Note: In January, the maximum UV index of 2 suggests this advice:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Sterling, IL
- Average high temperature in January: 27.7°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in January: 14.9°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in January
Sterling, 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 (29.91"Hg).
Average wind speed in January
Sterling, IL
- Average wind speed in January: 10mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in January
Sterling, IL
- Average humidity in January: 85%
The months with the highest relative humidity are January and July (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall in January
Sterling, IL
- Average rainfall in January: 0.75"
The wettest month (with the highest rainfall) is May (2.83").
The driest months (with the least rainfall) are January and February (0.75").
Average rainfall days in January
Sterling, IL
- Average rainfall days in January: 4.8 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in January
Sterling, IL
- Average snowfall in January: 2.56"
The month with the highest snowfall is January (2.56").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Sterling, IL
- Average snowfall days in January: 10.2 days
The month with the highest number of snowfall days is January (10.2 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
Sterling, IL
- Average daylight in January: 9h and 36min
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 48min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Sterling, IL
- Average sunshine days in January: 17 days
The months with the most sunshine days are November and December (18.8 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in January
Sterling, IL
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Sterling, IL
- Average cloud cover in January: 60
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in January
Sterling, IL
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
