What is the Weather in December in Chicago?

This post is an overview of the December weather in Chicago.

We include temperature, snow and rain forecasts, as well as tips on how to dress and things to do.

Temperatures
How Much Sun, Rain and Snow
What to Wear
Things to Do
Seasonal Outlook
Free Tours by Foot

If you're going to be in the windy city either before or after this month, make sure to check our posts covering weather in November and January as well.

HOW COLD IS CHICAGO IN DECEMBER?

December in Chicago tends to be very cold and is often below freezing.

On average, about 26 days record temperature dipping below freezing with 1-2 of these falling to 0 F (-18C) or below.

Early in the month, daytime high temperatures tend to be in the low to mid 40s F (5C to 6C) with a few of the warmer afternoons can reach up into the mid-50s F (12C to 13C).

By the end of this month, however, afternoon temperatures will more likely be in the low to mid 30s F (0C to1C).

The all-time record high temperature in Chicago during December is 71 F (21.7 C).

Late night and early morning low temperatures during December tend to be in the low to mid 30s F (about 1C) early in the month.

By the month's end, they are more likely to be in the low to mid 20s F (-6C to -4C),when a couple of the colder mornings can dip down into the single digits F (-22C to -19C) or less.

The all-time record low temperature in Chicago during December is -25 F (-31.7C).

HOW MUCH SUN AND RAIN?

Skies will be clear or at least partly sunny on about 12 days during December with about 19 days considered mostly cloudy.

Measurable precipitation occurs on about 11 days this month with about 1 day, on average, recording 0.5 inches (about 13 mm) or more.

Daylight hours this month will average a little over 9 hours with the shortest day occurring on December 22^nd.

HOW MUCH DOES IT SNOW IN CHICAGO IN DECEMBER?

Snowfalls of at least 1 inch (about 2.5 cm) typically occur on 2-3 days with snowfalls of 3 inches (about 7.6 cm) or more occur on about 1 day.

WHAT TO WEAR IN DECEMBER?

Winter gear is a most this month so dress in layers with a medium or heavy jacket and also a warm hat, gloves and scarf.

A pair of good waterproof Boots and/or shows will also come in handy.

WHAT TO DO IN CHICAGO IN DECEMBER?

Below are the top things to do in December in Chicago.

Be sure to read our full post on what to do in Chicago in December which includes more detail, as well as our definitive post on the best things to do in Chicago.

And if you are planning on visiting many of Chicago's top attractions, then you should consider a tourist discount pass.

These passs could save up to 50% of retail ticket prices to tours, attractions, and restaurants.