Typical Weather in Chicago, IL in December
38° F Avg High
27° F Avg Low
0 Rainy Days
☀️ Temperature Summary
December is one of the cooler months of the year for Chicago, with highs averaging around 38°F. You can expect overnight lows near 27°F most days. Daily high temperatures can range between 45°F and 36°F for the month of December.
You may want to consider a warmer month to visit Chicago, unless you're ready to brave the cold. If you're looking to travel when it's warmer, you might consider visiting in November instead, when daily highs are typically closer to 50°.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
In December you can expect close to a 0% chance of rain for any given day. It rains more than usual in December, with total rainfall for the month typically near NaN inches.
Rainfall Throughout the Year
Planning a trip to Chicago? Try our free trip weather planner