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
With an average high-temperature of 29.5°F (-1.4°C) and an average low-temperature of 17.4°F (-8.1°C), January is the coldest month.Humidity
In January, the average relative humidity is 82%.Rainfall
The months with the least rainfall are January and December Rain falls for 4 days and accumulates 0.47" (12mm) of rain.Snowfall
January through April, October through December are months with snowfall. January is the month with the most snowfall. Snow falls for 8.8 days and accumulates 1.38" (35mm) of snow.Daylight
In January, the average length of the day is 9h and 38min.On the first day of January, sunrise is at 7:25 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:16 pm CST.
Sunshine
With an average of 4h of sunshine, January has the least sunshine of the year.UV index
In January, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high UV index of 2 in January translates into the following recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Direct Sun exposure should be minimized especially during midday when radiation is most intense. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. 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 time of the year is the coldest?
How cold is it in January?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
What is the snowiest month?
How many days does it snow in January in Knoxville?
How many hours of daylight does Knoxville have in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What is the UV index intensity in January?
Average temperature in January
Knoxville, IL
- Average high temperature in January: 29.5°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 (29.5°F).
- Average low temperature in January: 17.4°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure in January
Knoxville, IL
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Knoxville, IL
- Average wind speed in January: 10.6mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in January
Knoxville, 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
Knoxville, IL
- Average rainfall in January: 0.47"
The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are January and December (0.47").
Average rainfall days in January
Knoxville, IL
- Average rainfall days in January: 4 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in January
Knoxville, IL
- Average snowfall in January: 1.38"
The month with the highest snowfall is January (1.38").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Knoxville, IL
- Average snowfall days in January: 8.8 days
The month with the highest number of snowfall days is January (8.8 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
Knoxville, 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: 4h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in January
Knoxville, IL
- Average sunshine days in January: 20 days
The month with the most sunshine days is December (21.6 days).
The month with the least sunshine days is June (12.4 days).
Average UV index in January
Knoxville, 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
Knoxville, IL
- Average cloud cover in January: 58
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in January
Knoxville, IL
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Knoxville, Illinois, USA
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