Illinois (Chicago)
December
Weather in Illinois for December 2024
Your guide to Illinois weather in December - trends and predictions
The forecast for the first days of December 2024 in Illinois predicts a temperature of 5.1 °F, which is slightly above the historical average.
In general, the average temperature in Illinois at the beginning of December is 5 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 4.1 °F by the end of December.
The climate of Illinois in December is notably wet, with an average of 12 rainy days.
With an average of 2 snowy days, Illinois enjoys a light touch of snow in December.
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17
Dry days
12
Rainy days
2
Snow days
6°/-2°
Temperatures
22 km/h
Avg max wind
74 %
Avg humidity
Illinois in December average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  4° | ||||||
| 2  8° | 3  1° | 4  3° | 5  4° | 6 5° | 7 10° | 8 11° |
| 9 12° | 10  4° | 11  3° | 12 2° | 13 4° | 14 7° | 15 7° |
| 16  6° | 17 7° | 18  5° | 19 1° | 20 5° | 21 6° | 22  4° |
| 23  -3° | 24 0° | 25 1° | 26 3° | 27 2° | 28 5° | 29 8° |
| 30 7° | 31 3° |
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Temperatures trend during December in Illinois
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 | Overcast | 4° /0° | 0 mm | 0 cm | |
| Dec. 2 | Patchy rain possible | 8° /4° | 1.7 mm | 0 cm | |
| Dec. 3 | Partly cloudy | 1° /-2° | 0 mm | 0 cm | |
| Dec. 4 | Mist | 3° /0° | 0 mm | 0 cm | |
| Dec. 5 | Moderate snow | 4° /1° | 5.8 mm | 1.4 cm | |
| Dec. 6 | Overcast | 5° /0° | 0 mm | 0 cm | |
| Dec. 7 | Partly cloudy | 10° /1° | 0 mm | 0 cm | |
| Dec. 8 | Patchy rain possible | 11° /5° | 0.3 mm | 0 cm | |
| Dec. 9 | Light rain shower | 12° /4° | 1.3 mm | 0 cm | |
| Dec. 10 | Blowing snow | 4° /0° | 1 mm | 0 cm | |
| Dec. 11 | Sunny | 3° /0° | 0 mm | 0 cm | |
| Dec. 12 | Partly cloudy | 2° /0° | 0 mm | 0 cm | |
| Dec. 13 | Partly cloudy | 4° /0° | 0 mm | 0 cm | |
| Dec. 14 | Sunny | 7° /1° | 0 mm | 0 cm | |
| Dec. 15 | Partly cloudy | 7° /3° | 0 mm | 0 cm | |
| Dec. 16 | Light rain | 6° /5° | 9.7 mm | 0 cm | |
| Dec. 17 | Fog | 7° /5° | 1.2 mm | 0 cm | |
| Dec. 18 | Light snow | 5° /-2° | 0.2 mm | 0 cm | |
| Dec. 19 | Overcast | 1° /-3° | 0 mm | 0 cm | |
| Dec. 20 | Overcast | 5° /1° | 0 mm | 0 cm | |
| Dec. 21 | Patchy rain possible | 6° /2° | 0.6 mm | 0 cm | |
| Dec. 22 | Patchy moderate snow | 4° /-5° | 8.9 mm | 1.5 cm | |
| Dec. 23 | Light freezing rain | -3° /-7° | 2.1 mm | 0 cm | |
| Dec. 24 | Overcast | 0° /-5° | 0.2 mm | 0 cm | |
| Dec. 25 | Overcast | 1° /-3° | 4.6 mm | 0 cm | |
| Dec. 26 | Light freezing rain | 3° /-3° | 0.5 mm | 0 cm | |
| Dec. 27 | Overcast | 2° /-3° | 0 mm | 0 cm | |
| Dec. 28 | Overcast | 5° /1° | 1.7 mm | 0 cm | |
| Dec. 29 | Patchy rain possible | 8° /3° | 1.8 mm | 0 cm | |
| Dec. 30 | Overcast | 7° /0° | 0.1 mm | 0 cm | |
| Dec. 31 | Overcast | 3° /0° | 0.7 mm | 0.3 cm | |
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Important Notice
Our weather forecast for Illinois 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 Illinois forecast closer to your planned date for the most up-to-date weather information.
Illinois in December - FAQ
What are the expected maximum and minimum temperatures in Illinois during December?
Prepare for cooler days with highs just around 6° and colder nights, dipping below -2°.
How much rainfall should be expected in Illinois during December?
Moderate rainfall is anticipated in Illinois during December, with a total of 94.3 mm spread over approximately 12 days. Considering plans for rainy days is advisable.
Is snowfall common in Illinois during December?
Illinois experiences an average snowfall of 5.1 cm during December, occurring over 2 days, which may interest winter sports enthusiasts.
What are the typical wind conditions in Illinois during December?
The average wind speed in Illinois during December is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Illinois
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December snowfall in Illinois
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