Cook County (Chicago)
January
Weather in Cook County for January 2025
Your guide to Cook County weather in January - trends and predictions
In general, the average temperature in Cook County at the beginning of January is 4 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 1 °F by the end of January.
Cook County sees moderate rainfall in January, averaging 10 rainy days.
Snowfall in Cook County during January is quite rare, with fewer than 2 snowy days on average.
- New! Chat with our AI weatherman - it’s amazing and free.
20
Dry days
10
Rainy days
1
Snow days
4°/-7°
Temperatures
22 km/h
Avg max wind
82 %
Avg humidity
Cook County in January average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  5° | 2 5° | 3  7° | 4 5° | 5  2° | ||
| 6 1° | 7  3° | 8 2° | 9  4° | 10 4° | 11 4° | 12 3° |
| 13 1° | 14 -5° | 15 -4° | 16  -3° | 17  0° | 18 -1° | 19 -2° |
| 20 -3° | 21 -2° | 22 1° | 23 2° | 24 2° | 25  2° | 26 1° |
| 27 2° | 28 1° | 29 3° | 30 -2° | 31 -0° |
You can click on date
Access Cook County weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during January in Cook County
See the weather trend as well as the moving average line
January weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Jan. 1 | Overcast | 5° /1° | 3.4 mm | 0.5 cm | |
| Jan. 2 | Overcast | 5° /1° | 0.1 mm | 0 cm | |
| Jan. 3 | Moderate or heavy rain shower | 7° /3° | 8.3 mm | 0.3 cm | |
| Jan. 4 | Overcast | 5° /1° | 0.1 mm | 0 cm | |
| Jan. 5 | Light freezing rain | 2° /0° | 0.7 mm | 0 cm | |
| Jan. 6 | Overcast | 1° /0° | 1.7 mm | 1.4 cm | |
| Jan. 7 | Partly cloudy | 3° /0° | 0.2 mm | 0.1 cm | |
| Jan. 8 | Overcast | 2° /0° | 0.4 mm | 0.3 cm | |
| Jan. 9 | Sunny | 4° /-1° | 10 mm | 4 cm | |
| Jan. 10 | Overcast | 4° /0° | 0.5 mm | 0.1 cm | |
| Jan. 11 | Overcast | 4° /0° | 0.8 mm | 0.7 cm | |
| Jan. 12 | Overcast | 3° /0° | 14 mm | 5.2 cm | |
| Jan. 13 | Overcast | 1° /-7° | 2.9 mm | 0 cm | |
| Jan. 14 | Sunny | -5° /-10° | 0.2 mm | 0 cm | |
| Jan. 15 | Partly cloudy | -4° /-11° | 0 mm | 0 cm | |
| Jan. 16 | Heavy rain at times | -3° /-9° | 3.3 mm | 0 cm | |
| Jan. 17 | Patchy rain possible | 0° /-6° | 0.2 mm | 0 cm | |
| Jan. 18 | Patchy rain possible | -1° /-4° | 2.8 mm | 0.4 cm | |
| Jan. 19 | Moderate rain at times | -2° /-6° | 5.3 mm | 1 cm | |
| Jan. 20 | Overcast | -3° /-8° | 0.1 mm | 0.1 cm | |
| Jan. 21 | Partly cloudy | -2° /-9° | 0.1 mm | 0 cm | |
| Jan. 22 | Light freezing rain | 1° /-3° | 3 mm | 0.2 cm | |
| Jan. 23 | Overcast | 2° /-1° | 7.2 mm | 0 cm | |
| Jan. 24 | Overcast | 2° /0° | 4 mm | 0 cm | |
| Jan. 25 | Patchy moderate snow | 2° /0° | 9 mm | 0.3 cm | |
| Jan. 26 | Light freezing rain | 1° /-2° | 3.7 mm | 0 cm | |
| Jan. 27 | Light freezing rain | 2° /-2° | 0.9 mm | 0 cm | |
| Jan. 28 | Patchy moderate snow | 1° /-2° | 3.2 mm | 0.9 cm | |
| Jan. 29 | Overcast | 3° /-4° | 0.9 mm | 0.3 cm | |
| Jan. 30 | Overcast | -2° /-6° | 1.2 mm | 0.1 cm | |
| Jan. 31 | Overcast | 0° /-7° | 0 mm | 0 cm | |
| Next | |||||
Important Notice
Our weather forecast for Cook 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 Cook County forecast closer to your planned date for the most up-to-date weather information.
Cook County in January - FAQ
What are the expected maximum and minimum temperatures in Cook County during January?
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 Cook County during January?
Significant rainfall exceeding 176.1 mm is expected in Cook County during January, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
Is snowfall common in Cook County during January?
Cook County experiences an average snowfall of 31.6 cm during January, occurring over 1 days, which may interest winter sports enthusiasts.
What are the typical wind conditions in Cook County during January?
The average wind speed in Cook County during January is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
January rainfall patterns in Cook County
Explore the daily rainfall trends and prepare for Cook Countys January weather 💧
January snowfall in Cook County
Track daily snowfall levels and discover Cook County’s snowy potential this January ❄️
Top locations in Cook County
Select a location for an accurate weather forecast
More Locations Quick links
You are here
Where is Cook County?Get accurate weather forecasts for Cook County, located at latitude 41.85 and longitude -87.65. Stay updated with localized weather information tailored for Cook County.
Found a mistake?
We appreciate your attention to details. Tell us here.