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The weather in Chicago 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 Chicago 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 Chicago 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 Chicago in January 2025.
If you’re planning to visit Chicago in the near future, we highly recommend that you review the 14 day weather forecast for Chicago before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -2° / -7° | 5 | 11 | 15 | 39 mm | Awful | Chicago in January |
| February | 0° / -6° | 4 | 11 | 14 | 41 mm | Awful | Chicago in February |
| March | 7° / 1° | 6 | 19 | 6 | 55 mm | Bad | Chicago in March |
| April | 12° / 5° | 7 | 21 | 3 | 79 mm | Awful | Chicago in April |
| May | 19° / 12° | 7 | 24 | 0 | 98 mm | Ok | Chicago in May |
| June | 24° / 17° | 7 | 23 | 0 | 128 mm | Good | Chicago in June |
| July | 27° / 20° | 7 | 24 | 0 | 114 mm | Good | Chicago in July |
| August | 27° / 19° | 5 | 26 | 0 | 100 mm | Perfect | Chicago in August |
| September | 24° / 16° | 4 | 26 | 0 | 64 mm | Perfect | Chicago in September |
| October | 16° / 10° | 5 | 25 | 0 | 65 mm | Good | Chicago in October |
| November | 9° / 3° | 4 | 22 | 4 | 40 mm | Bad | Chicago in November |
| December | 3° / -2° | 5 | 16 | 10 | 38 mm | Awful | Chicago in December |