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United States weather

Weather in America, Illinois for December 2026

Your guide to America weather in December - trends and predictions

    Snow Forecast ❄️

  • Snowfall in America during December is quite rare, with fewer than 2 snowy days on average.

    • Temperatures

  • In general, the average temperature in America at the beginning of December is 3 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 11.6 °F by the end of December.

    • Rain 🌧️

  • With an average of 2 rainy days, America experiences minimal rainfall in December.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
28
Dry days
Average rainy days
2
Rainy days
Average snowy days
1
Snow days
Average temperatures
7°/1°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
76 %
Avg humidity

America Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
1°
2
Patchy moderate snow
3°
3
Overcast
3°
4
Overcast
0°
5
Overcast
5°
6
Mist
4°
7
Fog
5°
8
Overcast
2°
9
Cloudy
6°
10
Overcast
12°
11
Overcast
3°
12
Partly cloudy
8°
13
Overcast
6°
14
Sunny
-3°
15
Sunny
2°
16
Overcast
3°
17
Overcast
6°
18
Moderate or heavy rain with thunder
10°
19
Sunny
5°
20
Sunny
12°
21
Cloudy
7°
22
Overcast
7°
23
Mist
10°
24
Fog
17°
25
Fog
18°
26
Overcast
17°
27
Overcast
17°
28
Overcast
19°
29
Sunny
3°
30
Partly cloudy
2°
31
Cloudy
5°

Temperatures trend during December in America

See the weather trend as well as the moving average line

December weather in America day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Overcast
Overcast
 1° /-2° 0 mm 0 cm
Dec. 2 Patchy moderate snow
Patchy moderate snow
 3° /-1° 3.5 mm 2.5 cm
Dec. 3 Overcast
Overcast
 3° /-3° 0 mm 0 cm
Dec. 4 Overcast
Overcast
 0° /-3° 0 mm 0 cm
Dec. 5 Overcast
Overcast
 5° /-4° 0 mm 0 cm
Dec. 6 Mist
Mist
 4° /-1° 0 mm 0 cm
Dec. 7 Fog
Fog
 5° /1° 0 mm 0 cm
Dec. 8 Overcast
Overcast
 2° /0° 0 mm 0 cm
Dec. 9 Cloudy
Cloudy
 6° /-1° 0 mm 0 cm
Dec. 10 Overcast
Overcast
 12° /2° 0 mm 0 cm
Dec. 11 Overcast
Overcast
 3° /0° 0 mm 0 cm
Dec. 12 Partly cloudy
Partly cloudy
 8° /0° 0 mm 0 cm
Dec. 13 Overcast
Overcast
 6° /0° 0 mm 0 cm
Dec. 14 Sunny
Sunny
 -3° /-8° 0 mm 0 cm
Dec. 15 Sunny
Sunny
 2° /-10° 0 mm 0 cm
Dec. 16 Overcast
Overcast
 3° /-3° 0 mm 0 cm
Dec. 17 Overcast
Overcast
 6° /2° 0 mm 0 cm
Dec. 18 Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 10° /4° 55 mm 0 cm
Dec. 19 Sunny
Sunny
 5° /-1° 0 mm 0 cm
Dec. 20 Sunny
Sunny
 12° /0° 0 mm 0 cm
Dec. 21 Cloudy
Cloudy
 7° /0° 0 mm 0 cm
Dec. 22 Overcast
Overcast
 7° /0° 0 mm 0 cm
Dec. 23 Mist
Mist
 10° /9° 0 mm 0 cm
Dec. 24 Fog
Fog
 17° /15° 0 mm 0 cm
Dec. 25 Fog
Fog
 18° /16° 0 mm 0 cm
Dec. 26 Overcast
Overcast
 17° /14° 0 mm 0 cm
Dec. 27 Overcast
Overcast
 17° /11° 0 mm 0 cm
Dec. 28 Overcast
Overcast
 19° /17° 0 mm 0 cm
Dec. 29 Sunny
Sunny
 3° /-2° 3.3 mm 0 cm
Dec. 30 Partly cloudy
Partly cloudy
 2° /-5° 0 mm 0 cm
Dec. 31 Cloudy
Cloudy
 5° /-3° 0 mm 0 cm
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Important Notice
Our weather forecast for America 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 America forecast closer to your planned date for the most up-to-date weather information.
Change Month
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America in December - FAQ

What are the expected maximum and minimum temperatures in America during December?
Prepare for cooler days with highs just around 7° and colder nights, dipping below 1°.

How much rainfall should be expected in America during December?
Moderate rainfall is anticipated in America during December, with a total of 61.8 mm spread over approximately 2 days. Considering plans for rainy days is advisable.

Will it snow in America in December 2026?
America typically sees 2.5 cm of snowfall during December.

What are the typical wind conditions in America during December?
The average wind speed in America during December is 22 km/h, suggesting breezy to windy conditions, depending on your activities.

America snow forecast December 2026

Track daily snowfall levels and discover America’s snowy potential this December ❄️
On average, America sees 1 snowy days during December, with approximately 2.5 cm of total snowfall.

December rainfall patterns in America

Explore the daily rainfall trends and prepare for Americas December weather 💧
Typically, America has 2 rainy days in December with a total of 61.8 mm of rainfall.

Quick links

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Location coordinates Where is America?

Get accurate weather forecasts for America, located at latitude 37.138 and longitude -89.124. Stay updated with localized weather information tailored for America.

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