Winnebago County (Rockford)
January
Weather in Winnebago County for January 2026
Your guide to Winnebago County weather in January - trends and predictions
The climate of Winnebago County in January is quite snowy, averaging 11 snowy days.
In general, the average temperature in Winnebago County at the beginning of January is -0.6 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 2.1 °F by the end of January.
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Snow Forecast ❄️
Temperatures
More
15
Dry days
5
Rainy days
11
Snow days
-3°/-8°
Temperatures
21 km/h
Avg max wind
89 %
Avg humidity
Winnebago County Weather January
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  1° | 2  1° | 3  -1° | ||||
| 4 -2° | 5  -1° | 6  -1° | 7  -1° | 8 -3° | 9  -1° | 10 -0° |
| 11  -1° | 12 0° | 13  -3° | 14 -11° | 15  -9° | 16 -8° | 17 -6° |
| 18 -6° | 19 -11° | 20 -10° | 21 -10° | 22 -3° | 23  -2° | 24 -2° |
| 25  1° | 26 1° | 27 1° | 28 2° | 29 3° | 30 3° | 31 4° |
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Temperatures trend during January in Winnebago County
See the weather trend as well as the moving average line
January weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Jan. 1 | Sunny | 1° /-3° | 0 mm | 0 cm | |
| Jan. 2 | Cloudy | 1° /-4° | 0 mm | 0 cm | |
| Jan. 3 | Light freezing rain | -1° /-5° | 0 mm | 0 cm | |
| Jan. 4 | Sunny | -2° /-8° | 0 mm | 0 cm | |
| Jan. 5 | Light snow | -1° /-6° | 0.1 mm | 0.1 cm | |
| Jan. 6 | Moderate or heavy snow showers | -1° /-4° | 0.9 mm | 0.8 cm | |
| Jan. 7 | Overcast | -1° /-5° | 0 mm | 0 cm | |
| Jan. 8 | Light snow | -3° /-6° | 0.5 mm | 0.4 cm | |
| Jan. 9 | Heavy snow | -1° /-6° | 14.1 mm | 2.7 cm | |
| Jan. 10 | Overcast | 0° /-5° | 0.8 mm | 0.4 cm | |
| Jan. 11 | Mist | -1° /-8° | 0.6 mm | 0.5 cm | |
| Jan. 12 | Heavy snow | 0° /-4° | 16.8 mm | 1.3 cm | |
| Jan. 13 | Moderate snow | -3° /-14° | 1.5 mm | 0 cm | |
| Jan. 14 | Light snow | -11° /-18° | 0.1 mm | 0 cm | |
| Jan. 15 | Freezing fog | -9° /-22° | 0 mm | 0 cm | |
| Jan. 16 | Cloudy | -8° /-18° | 0 mm | 0 cm | |
| Jan. 17 | Overcast | -6° /-14° | 0 mm | 0 cm | |
| Jan. 18 | Freezing fog | -6° /-15° | 0.1 mm | 0.1 cm | |
| Jan. 19 | Moderate snow | -11° /-18° | 0.4 mm | 0.3 cm | |
| Jan. 20 | Mist | -10° /-21° | 0 mm | 0 cm | |
| Jan. 21 | Freezing fog | -10° /-23° | 0 mm | 0 cm | |
| Jan. 22 | Heavy snow | -3° /-12° | 1.8 mm | 1.2 cm | |
| Jan. 23 | Light sleet | -2° /-6° | 6.1 mm | 0 cm | |
| Jan. 24 | Light freezing rain | -2° /-9° | 3.2 mm | 0 cm | |
| Jan. 25 | Light rain | 1° /-4° | 3.4 mm | 0 cm | |
| Jan. 26 | Fog | 1° /-5° | 3.6 mm | 0 cm | |
| Jan. 27 | Fog | 1° /-5° | 0.1 mm | 0 cm | |
| Jan. 28 | Overcast | 2° /-5° | 0 mm | 0 cm | |
| Jan. 29 | Freezing fog | 3° /-5° | 0 mm | 0 cm | |
| Jan. 30 | Light snow | 3° /-1° | 0.1 mm | 0.1 cm | |
| Jan. 31 | Sunny | 4° /-2° | 20 mm | 0 cm | |
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Important Notice
Our weather forecast for Winnebago County in January 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 January - FAQ
What are the expected maximum and minimum temperatures in Winnebago County during January?
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 Winnebago County during January?
Significant rainfall exceeding 108.4 mm is expected in Winnebago County during January, occurring over more than 5 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Winnebago County in January 2026?
Winnebago County experiences an average snowfall of 15.72 cm during January, occurring over 11 days.
What are the typical wind conditions in Winnebago County during January?
The average wind speed in Winnebago County during January is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
Winnebago County snow forecast January 2026
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January rainfall patterns in Winnebago County
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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.
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