Winnebago County (Rockford)
December
Weather in Winnebago County for December 2025
Your guide to Winnebago County weather in December - trends and predictions
With an average of 5 snowy days, Winnebago County usually enjoys a light touch of snow in December.
In general, the average temperature in Winnebago County at the beginning of December is 1.9 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 4.7 °F by the end of December.
New! Chat with our AI weatherman - it’s amazing and free.
Snow Forecast ❄️
Temperatures
More
19
Dry days
7
Rainy days
5
Snow days
4°/-1°
Temperatures
21 km/h
Avg max wind
75 %
Avg humidity
Winnebago County in December average weather
Move between months or click on a day
| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  2° | 2  1° | 3  1° | 4 1° | 5 -1° | 6  1° | |
| 7 8° | 8 6° | 9  8° | 10 1° | 11  1° | 12  -4° | 13  1° |
| 14 4° | 15 5° | 16  4° | 17 4° | 18 1° | 19 0° | 20 3° |
| 21 1° | 22 3° | 23 6° | 24 7° | 25 6° | 26 6° | 27 5° |
| 28 6° | 29 5° | 30 4° | 31  1° |
You can click on date
Access Winnebago County weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during December in Winnebago County
See the weather trend as well as the moving average line
December weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 | Heavy snow | 2° /-6° | 4.5 mm | 2.2 cm | |
| Dec. 2 | Fog | 1° /-4° | 1.4 mm | 0.7 cm | |
| Dec. 3 | Light snow | 1° /-4° | 3.7 mm | 1.1 cm | |
| Dec. 4 | Mist | 1° /-4° | 0 mm | 0 cm | |
| Dec. 5 | Heavy snow | -1° /-6° | 1.5 mm | 1.1 cm | |
| Dec. 6 | Overcast | 1° /-6° | 0 mm | 0 cm | |
| Dec. 7 | Overcast | 8° /-3° | 0 mm | 0 cm | |
| Dec. 8 | Overcast | 6° /1° | 0.1 mm | 0 cm | |
| Dec. 9 | Light rain shower | 8° /0° | 7.7 mm | 0 cm | |
| Dec. 10 | Overcast | 1° /-2° | 0 mm | 0 cm | |
| Dec. 11 | Sunny | 1° /-6° | 0 mm | 0 cm | |
| Dec. 12 | Cloudy | -4° /-8° | 0 mm | 0 cm | |
| Dec. 13 | Partly cloudy | 1° /-8° | 0 mm | 0 cm | |
| Dec. 14 | Sunny | 4° /-3° | 5.5 mm | 0.6 cm | |
| Dec. 15 | Cloudy | 5° /0° | 7.2 mm | 0 cm | |
| Dec. 16 | Light rain | 4° /2° | 6 mm | 0 cm | |
| Dec. 17 | Fog | 4° /1° | 0 mm | 0 cm | |
| Dec. 18 | Light snow | 1° /-4° | 2 mm | 1.5 cm | |
| Dec. 19 | Overcast | 0° /-5° | 0 mm | 0 cm | |
| Dec. 20 | Cloudy | 3° /-2° | 0 mm | 0 cm | |
| Dec. 21 | Patchy rain possible | 1° /-4° | 0.7 mm | 0 cm | |
| Dec. 22 | Light rain | 3° /-1° | 5.4 mm | 0 cm | |
| Dec. 23 | Fog | 6° /2° | 0.4 mm | 0 cm | |
| Dec. 24 | Cloudy | 7° /3° | 0 mm | 0 cm | |
| Dec. 25 | Light rain | 6° /4° | 4 mm | 0 cm | |
| Dec. 26 | Patchy rain possible | 6° /0° | 0.2 mm | 0 cm | |
| Dec. 27 | Overcast | 5° /1° | 5.3 mm | 0 cm | |
| Dec. 28 | Light drizzle | 6° /2° | 2.5 mm | 0 cm | |
| Dec. 29 | Patchy rain possible | 5° /1° | 0.5 mm | 0 cm | |
| Dec. 30 | Overcast | 4° /0° | 0 mm | 0 cm | |
| Dec. 31 | Moderate or heavy snow showers | 1° /-2° | 11.2 mm | 8.1 cm | |
| Next | |||||
Important Notice
Our weather forecast for Winnebago County 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 Winnebago County forecast closer to your planned date for the most up-to-date weather information.
Winnebago County in December - FAQ
What are the expected maximum and minimum temperatures in Winnebago County 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 Winnebago County during December?
Moderate rainfall is anticipated in Winnebago County during December, with a total of 53.2 mm spread over approximately 7 days. Considering plans for rainy days is advisable.
Will it snow in Winnebago County in December 2025?
Winnebago County experiences an average snowfall of 5.57 cm during December, occurring over 5 days.
What are the typical wind conditions in Winnebago County during December?
The average wind speed in Winnebago County during December is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
Winnebago County snow forecast December 2025
Track daily snowfall levels and discover Winnebago County’s snowy potential this December ❄️
December rainfall patterns in Winnebago County
Explore the daily rainfall trends and prepare for Winnebago Countys December weather 💧
Top locations in Winnebago County
Select a location for an accurate weather forecast
More Locations Quick links
You are here
Where is Winnebago County?Get accurate weather forecasts for Winnebago County, located at latitude 42.271 and longitude -89.094. Stay updated with localized weather information tailored for Winnebago County.
Found a mistake?
We appreciate your attention to details. Tell us here.