Weather in January 2025

Illinois weather in January 2025

°C °F

The average weather in Illinois in January

The weather in Illinois in January is very cold with temperatures between -7°C and -2°C, warm clothes are a must.

You can expect about 3 to 8 days of rain in Illinois during the month of January. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Let it snow! You can expect Illinois to be covered in white during the month of January. Be sure to bundle up when you venture outside, or take the opportunity to enjoy hot cocoa by the fire for warmth this month.

Our weather forecast can give you a great sense of what weather to expect in Illinois in January 2025.

If you’re planning to visit Illinois in the near future, we highly recommend that you review the 14 day weather forecast for Illinois before you arrive.

Temperatures
-2° / -7°
Rainy Days
5
Snowy Days
15
Dry Days
11
Rainfall
39
mm
Sun Hours
6.3
Hrs

Explore the weather in Illinois in other months

Illinois annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January -2° / -7° 5 11 15 39 mm
Awful
February 0° / -6° 4 11 14 41 mm
Awful
March 7° / 1° 6 19 6 55 mm
Bad
April 12° / 5° 7 21 3 79 mm
Awful
May 19° / 12° 7 24 0 98 mm
Ok
June 24° / 17° 7 23 0 128 mm
Good
July 27° / 20° 7 24 0 114 mm
Good
August 27° / 19° 5 26 0 100 mm
Perfect
September 24° / 16° 4 26 0 64 mm
Perfect
October 16° / 10° 5 25 0 65 mm
Good
November 9° / 3° 4 22 4 40 mm
Bad
December 3° / -2° 5 16 10 38 mm
Awful

Weather in Illinois in January - FAQ

What is the average temperature in Illinois in January?
The average temperature in Illinois in January is -7/-2° C.
What is the chance of rain in Illinois in January?
On average, there are 5 rainy days in Illinois during January.
Weather wise, is January a good time to visit Illinois?
The weather in Illinois in January is awful.
Can it snow in Illinois in January?
On average, there are 15 snowy days in Illinois in January.
Cities in Illinois

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