Chicago weather in December
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Chicago December weather at a glance
In December, Chicago averages -1.3°C, with typical highs of 1.8°C and lows of -4.7°C. The historical average is 11 wet days and 77% humidity.
Chicago December temperature & humidity
Chicago December rain & wet days
Pack a compact umbrella. Keep an indoor stop available between outdoor activities.
What to wear in Chicago in December
Pack a warm insulated coat, thermal layers, gloves and a scarf. Showers are possible, so a compact umbrella is useful.
- DaytimeWarm coat and layered tops · average high 1.8°C
- Morning & eveningInsulating coat, scarf and gloves · average low -4.7°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
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Chicago December sunrise & sunset times
2026 December · Local time (America/Chicago)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-12-01 | 06:59 | 16:20 | 9h 22m |
| 2026-12-15 | 07:11 | 16:20 | 9h 9m |
| 2026-12-31 | 07:18 | 16:29 | 9h 11m |
For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.
Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup
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Best months to visit Chicago
Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.
December weather by year
Daily weather in 2025
Daily high and low temperatures; blue labels show precipitation
Frequently asked questions
What is Chicago weather like in December?
In December, Chicago averages -1.3°C, with typical highs of 1.8°C and lows of -4.7°C. The historical average is 11 wet days and 77% humidity. Our weather-comfort rating for this month is challenging.
Does it rain a lot in Chicago in December?
There are about 11 wet days in December. A compact umbrella is still useful.
What should I wear in Chicago in December?
Pack a warm insulated coat, thermal layers, gloves and a scarf. Showers are possible, so a compact umbrella is useful.
What are the best months to visit Chicago?
Recent weather data rates May, June, August, September among the more comfortable months.
Where can I check Chicago weather in December in real time?
Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.
What time are sunrise and sunset in Chicago in December?
On 2026-12-15, calculated sunrise is 07:11 and sunset is 16:20 in local time (America/Chicago). Times vary by date and terrain.
Chicago weather by month
More Americas destinations in December
Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations