Chicago (IL)
December
Weather in Chicago, Illinois for December 2026
Your guide to Chicago weather in December - trends and predictions
With an average of 3 snowy days, Chicago usually enjoys a light touch of snow in December.
In general, the average temperature in Chicago at the beginning of December is 3.9 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 3.7 °F by the end of December.
Chicago experiences moderate rainfall in December, with an average of 7 rainy days and a total precipitation of 82.4 mm.
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Snow Forecast ❄️
Temperatures
Rain 🌧️
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22
Dry days
7
Rainy days
3
Snow days
3°/-1°
Temperatures
24 km/h
Avg max wind
75 %
Avg humidity
Chicago Weather December
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Temperatures trend during December in Chicago
See the weather trend as well as the moving average line
December weather in Chicago day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 |  Overcast | 4° /-2° | 5.3 mm | 1.6 cm | |
| Dec. 2 |  Patchy rain possible | 5° /0° | 1 mm | 0.2 cm | |
| Dec. 3 |  Partly cloudy | 5° /-1° | 4.8 mm | 0.8 cm | |
| Dec. 4 | Overcast | 2° /-3° | 0 mm | 0 cm | |
| Dec. 5 | Overcast | 3° /-4° | 3.7 mm | 0.3 cm | |
| Dec. 6 | Overcast | 3° /-3° | 0 mm | 0 cm | |
| Dec. 7 | Overcast | 5° /-1° | 1.4 mm | 1 cm | |
| Dec. 8 | Overcast | 4° /0° | 0.1 mm | 0 cm | |
| Dec. 9 | Overcast | 6° /1° | 3 mm | 0 cm | |
| Dec. 10 | Overcast | 6° /1° | 4.2 mm | 0 cm | |
| Dec. 11 | Overcast | 4° /-1° | 2.5 mm | 0 cm | |
| Dec. 12 | Partly cloudy | 3° /-2° | 8 mm | 0.7 cm | |
| Dec. 13 |  Cloudy | 3° /-3° | 1.5 mm | 1 cm | |
| Dec. 14 | Partly cloudy | 4° /-2° | 5.7 mm | 0 cm | |
| Dec. 15 | Overcast | 5° /0° | 4.4 mm | 0 cm | |
| Dec. 16 | Cloudy | 6° /0° | 2.2 mm | 0 cm | |
| Dec. 17 | Overcast | 3° /0° | 0.3 mm | 0 cm | |
| Dec. 18 | Overcast | 3° /-2° | 1.7 mm | 0.3 cm | |
| Dec. 19 | Overcast | 1° /-4° | 0 mm | 0 cm | |
| Dec. 20 | Overcast | 3° /-2° | 0 mm | 0 cm | |
| Dec. 21 | Patchy rain possible | 2° /-2° | 0.2 mm | 0 cm | |
| Dec. 22 | Overcast | 3° /-3° | 3 mm | 0.5 cm | |
| Dec. 23 | Overcast | 2° /-2° | 1.1 mm | 0 cm | |
| Dec. 24 | Overcast | 2° /-3° | 0.1 mm | 0 cm | |
| Dec. 25 | Overcast | 2° /-2° | 1.9 mm | 0 cm | |
| Dec. 26 |  Sunny | 3° /-2° | 0.5 mm | 0 cm | |
| Dec. 27 | Overcast | 5° /0° | 3.6 mm | 0 cm | |
| Dec. 28 | Overcast | 6° /2° | 9.1 mm | 0 cm | |
| Dec. 29 | Overcast | 4° /-1° | 2.4 mm | 1 cm | |
| Dec. 30 | Overcast | 4° /-2° | 2.3 mm | 1 cm | |
| Dec. 31 | Overcast | 2° /-2° | 8.3 mm | 3.3 cm | |
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Important Notice
Our weather forecast for Chicago in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Chicago forecast closer to your planned date for the most up-to-date weather information.
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Chicago in December - FAQ
What are the expected maximum and minimum temperatures in Chicago during December?
Brace for cold days with temperatures not exceeding 3° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Chicago during December?
Moderate rainfall is anticipated in Chicago during December, with a total of 82.4 mm spread over approximately 7 days. Considering plans for rainy days is advisable.
Will it snow in Chicago in December 2026?
Chicago experiences an average snowfall of 11.7 cm during December, occurring over 3 days.
What are the typical wind conditions in Chicago during December?
The average wind speed in Chicago during December is 24 km/h, suggesting breezy to windy conditions, depending on your activities.
Chicago snow forecast December 2026
Track daily snowfall levels and discover Chicago’s snowy potential this December ❄️
On average, Chicago sees 3 snowy days during December, with approximately 11.7 cm of total snowfall.
December rainfall patterns in Chicago
Explore the daily rainfall trends and prepare for Chicagos December weather 💧
Typically, Chicago has 7 rainy days in December with a total of 82.4 mm of rainfall.
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