January weather forecast
Champaign, IL

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An old building that works as an auditorium within the University of Illinois in Champaign
An old building that works as an auditorium within the University of Illinois in Champaign

Weather in January

The New Year in Champaign, Illinois, commences amidst a typically cold and slightly humid winter ambiance. The prevailing weather condition during this month is cooler compared to December, with an average high-temperature hovering around 31.8°F (-0.1°C) and an average low-temperature settling at about 20.5°F (-6.4°C). The city also experiences a regular amount of precipitation and snowfall in January. Daylight hours are markedly shorter, with days spanning merely 9.7 hours on average. The predominance of cloud cover also leaves less time for direct sunshine.

Temperature

The lowest temperatures are recorded in January, with averages reaching a high of 31.8°F (-0.1°C) and a low of 20.5°F (-6.4°C).

Humidity

In January, the average relative humidity is 80%.

Rainfall

In Champaign, in January, during 6 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. Throughout the year, there are 129.9 rainfall days, and 18.15" (461mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. The month with the most snowfall is January, when snow falls for 8.7 days and typically aggregates up to 1.85" (47mm) of snow.

Daylight

In January, the average length of the day is 9h and 43min.
On the first day of the month, sunrise is at 7:15 am and sunset at 4:37 pm. On the last day of January, sunrise is at 7:02 am and sunset at 5:10 pm CST.

Sunshine

January has the least sunshine of the year, with an average of 4h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.
Note: A daily high UV index of 2 in January leads to these guidelines:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

In Champaign, January is the coldest month, with temperatures averaging a high of 31.8°F (-0.1°C) and a low of 20.5°F (-6.4°C).

How cold is January?

The high-temperature during January is 31.8°F (-0.1°C) and the low-temperature is 20.5°F (-6.4°C).

What is the average humidity in January?

In January, the average relative humidity is 80%.

How many days does it rain in January?

In Champaign, during January, the rain falls for 6 days and regularly aggregates up to 1.26" (32mm) of precipitation.

What is the snowiest month?

The month with the most snowfall is January, when snow falls for 8.7 days and typically aggregates up to 1.85" (47mm) of snow.

How many days does it snow in January?

In Champaign, Illinois, in January, snow falls for 8.7 days, with typically accumulated 1.85" (47mm) of snow.

What is the average length of the day in January?

The average day length in January is 9h and 43min.

When are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:15 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:10 pm CST.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 4h of sunshine.

How long on average sun shines in January?

In Champaign, the average sunshine duration in January is 4h.

When is the lowest UV index?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

How high is the UV index in January?

The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Champaign, IL

Average temperature in January - Champaign, IL
  • Average high temperature in January: 31.8°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 (31.8°F).

  • Average low temperature in January: 20.5°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average pressure in January
Champaign, IL

Average pressure in January - Champaign, 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 (29.92"Hg).

Average wind speed in January
Champaign, IL

Average wind speed in January - Champaign, IL
  • Average wind speed in January: 10.8mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in January
Champaign, IL

Average humidity in January - Champaign, IL
  • Average humidity in January: 80%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).

Average rainfall in January
Champaign, IL

Average rainfall in January - Champaign, IL
  • Average rainfall in January: 1.26"

The wettest month (with the highest rainfall) is April (2.24").
The driest month (with the least rainfall) is September (0.94").

Average rainfall days in January
Champaign, IL

Average rainfall days in January - Champaign, IL
  • Average rainfall days in January: 6 days

The month with the highest number of rainy days is May (15.3 days).
The months with the least rainy days are January and February (6 days).

Average snowfall in January
Champaign, IL

Average snowfall in January - Champaign, IL
  • Average snowfall in January: 1.85"

The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Champaign, IL

Average snowfall days in January - Champaign, IL
  • Average snowfall days in January: 8.7 days

The month with the highest number of snowfall days is January (8.7 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
Champaign, IL

Average daylight in January / Average sunshine in January - Champaign, IL
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in January: 4h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in January
Champaign, IL

Average sunshine days in January - Champaign, IL
  • Average sunshine days in January: 18.3 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.8 days).

Average UV index in January
Champaign, IL

Average UV index in January - Champaign, IL
  • Average UV index in January: 2

The months with the highest UV index are 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
Champaign, IL

Average cloud cover in January - Champaign, IL
  • Average cloud cover in January: 57

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 31).

Average visibility in January
Champaign, IL

Average visibility in January - Champaign, 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).

Champaign, Illinois, USA

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