Chicago Weather in December
December in Chicago brings low temperatures, with daytime highs of 3°C (37°F) and nights around -5°C (23°F). Quite a bit of snow/rainfall is expected, around 81 mm (3.2 in), so pack an umbrella.
Rainfall in Chicago in December
Looking at the last 30 years, the data shows about 13 days with snow/rain, averaging 81 mm (3.2 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Chicago in December
If you're visiting Chicago in December, expect highs of 3°C (37°F) and overnight lows around -5°C (23°F). December is part of winter. Staying warm is the main priority this month, especially during mornings and evenings. With overnight lows of -5°C (23°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. With the coldest weather of the year, this month demands extra warmth. Be sure to layer up to stay comfortable.
Sunshine in Chicago in December
You can expect a moderate amount of sunlight, with approximately 107 hours. This means a pleasant mix of sun and overcast.
Wind Speed in Chicago in December
December has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Chicago. Our weather planner can help you explore destinations with more pleasant weather conditions.
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 December
Min Temperature
-5°C (23°F)
Max Temperature
3°C (37°F)
Chance of Rain
43%
Precipitation
81 mm (3.2 in)
Rainy days
13 days
Humidity
76%
Windspeed
5 m/s (10 knots)
Sunshine
107 hours
Percentage Sunshine
37%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Chicago typically stay consistent throughout December, with daily highs averaging around 3°C (37°F). Nights are very cold, with lows typically ranging from -8°C (18°F) to -3°C (27°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Chicago in December
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 December
Based on 49 years of weather observations in Chicago between 1976 and 2025, these are the recorded extremes.
- Chicago recorded its highest December temperature of 22°C (72°F) on December 2, 1982.
Best Places in the United States of America in December
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 December →
perfect weather
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tolerable
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What to Wear in Chicago in December
We recommend to layer up for chilly conditions in Chicago in December. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Chicago in December
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.
