Chicago (IL)
December
Weather in Chicago, Illinois for December 2025
Your guide to Chicago weather in December - trends and predictions
Chicago typically experiences moderate snowfall in December, with an average of 6 snowy days.
According to Chicago snow forecast for December 2025, 8 snowy days are expected in the next 2 weeks. The closest date with snow is Sunday, December 7.The forecast for the next days in Chicago predicts a temperature of -3.9 °F, which is cooler than the historical average.
In general, the average temperature in Chicago at the beginning of December is 2.9 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 4 °F by the end of December.
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Snow Forecast ❄️
Temperatures
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11
Dry days
14
Rainy days
6
Snow days
4°/0°
Temperatures
24 km/h
Avg max wind
73 %
Avg humidity
Chicago Weather December
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Temperatures trend during December in Chicago
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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 | -1° /-4° | 0 mm | 0 cm | |
| Dec. 7 |  Moderate snow | 2° /-3° | 10.2 mm | 7.4 cm | |
| Dec. 8 | Overcast | -3° /-8° | 0 mm | 0 cm | |
| Dec. 9 |  Moderate or heavy snow showers | 1° /-8° | 2.2 mm | 0 cm | |
| Dec. 10 |  Moderate rain | 2° /-4° | 7 mm | 0.1 cm | |
| Dec. 11 |  Heavy snow | -4° /-6° | 2.2 mm | 1.6 cm | |
| Dec. 12 |  Blowing snow | -5° /-8° | 0.2 mm | 0 cm | |
| Dec. 13 |  Light freezing rain | -6° /-10° | 0.3 mm | 0.2 cm | |
| Dec. 14 | Light freezing rain | -9° /-13° | 0.4 mm | 0.2 cm | |
| Dec. 15 | Partly cloudy | -9° /-11° | 0.1 mm | 0.1 cm | |
| Dec. 16 | Partly cloudy | -8° /-14° | 0.1 mm | 0 cm | |
| Dec. 17 | Light freezing rain | -6° /-8° | 0.4 mm | 0.3 cm | |
| Dec. 18 | Moderate snow | -5° /-7° | 0.8 mm | 0.6 cm | |
| Dec. 19 | Overcast | 1° /-3° | 0 mm | 0 cm | |
| Dec. 20 | Overcast | 3° /-1° | 0 mm | 0 cm | |
| Dec. 21 | Patchy rain possible | 3° /-1° | 0.3 mm | 0 cm | |
| Dec. 22 | Overcast | 3° /-3° | 3.6 mm | 0.6 cm | |
| Dec. 23 | Overcast | 2° /-3° | 1.4 mm | 0 cm | |
| Dec. 24 | Overcast | 2° /-4° | 0.2 mm | 0 cm | |
| Dec. 25 |  Cloudy | 2° /-3° | 2.1 mm | 0 cm | |
| Dec. 26 |  Sunny | 3° /-3° | 0.6 mm | 0 cm | |
| Dec. 27 | Overcast | 5° /0° | 4.3 mm | 0 cm | |
| Dec. 28 | Overcast | 5° /1° | 2.8 mm | 0 cm | |
| Dec. 29 | Overcast | 5° /1° | 2.6 mm | 1.2 cm | |
| Dec. 30 | Overcast | 5° /0° | 2.8 mm | 1.2 cm | |
| Dec. 31 | Overcast | 3° /-2° | 9.9 mm | 3.9 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 4° 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 80.2 mm spread over approximately 14 days. Considering plans for rainy days is advisable.
Will it snow in Chicago in December 2025?
Chicago experiences an average snowfall of 7.601 cm during December, occurring over 6 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 2025
Track daily snowfall levels and discover Chicago’s snowy potential this December ❄️
On average, Chicago sees 6 snowy days during December, with approximately 7.6 cm of total snowfall.
December rainfall patterns in Chicago
Explore the daily rainfall trends and prepare for Chicagos December weather 💧
Typically, Chicago has 14 rainy days in December with a total of 80.2 mm of rainfall.
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