Chicago Weather in January
January in Chicago averages -1°C (30°F) during the day and -9°C (16°F) at night. With just 50 mm (2 in) of snowfall on average, it doesn't get much drier than this.
Rainfall in Chicago in January
The risk of rain is at its lowest this month, making it a reliable choice for outdoor plans, even if temperatures are on the cooler side. Analyzing past climate data, one can expect approximately 10 days of snow, averaging 50 mm (2 in). A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Chicago in January
Daytime highs in Chicago in January reach -1°C (30°F), with nights around -9°C (16°F). Experience the winter season in January. It stays very cold throughout much of the day, so warm winter clothing is essential. Nights drop below freezing to -9°C (16°F). An extra blanket is worth packing if you're unsure about the heating where you're staying. It's generally the coldest month of the year, making it essential to pack warm layers and winter accessories.
Sunshine in Chicago in January
You can expect a moderate amount of sunlight, with approximately 133 hours. This means a pleasant mix of sun and overcast.
Wind Speed in Chicago in January
January sees wind speeds averaging 6 m/s (12 knots). You'll experience strong winds that cause whole trees to sway and require effort when walking against them. As an average, expect variation from moderate breezes to particularly windy days that affect daily routines.January in Chicago can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Chicago's climate page.
Chicago Temperature in January
Min Temperature
-9°C (16°F)
Max Temperature
-1°C (30°F)
Chance of Rain
34%
Precipitation
50 mm (2 in)
Rainy days
10 days
Humidity
72%
Windspeed
6 m/s (12 knots)
Sunshine
133 hours
Percentage Sunshine
46%
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Chicago typically stay consistent throughout January, with daily highs averaging around -1°C (30°F). Nights are very cold, with lows typically ranging from -10°C (14°F) to -7°C (19°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Chicago in January
Browse day-by-day weather records for Chicago spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Chicago historical weather extremes in January
According to our 49 years of weather records for Chicago, the following extremes were recorded between 1976 and 2025.
- On January 7, 2008, temperatures climbed to 18°C (64°F), marking the warmest January day on record.
Best Places in the United States of America in January
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in January →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Chicago in January
Winter clothing is essential for visiting Chicago in January. If you have a heavy coat, waterproof boots with good traction, and plenty of warm layers it's smart to bring them. Pack cloths like thermal underwear, wool socks, and insulated gloves. Rain gear is recommended, you can expect wet weather on multiple days. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Chicago in January
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Chicago's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Chicago climate overview or explore weather in the United States of America.
