Weather in Chicago: December
 |
Average day temperature: | 36.0°F |
| Average night temperature: | 31.6°F | |
 |
Sea water temperature: | 40.7°F |
 |
Number of sunny days: | 8 days |
| Day length: | 9.1 - 9.4 hours | |
 |
Number of rainy days: | 2 days |
| Precipitation totals: | 1.6 in. | |
| more information | ||
forecast
| Chicago |
temperature
| Chicago |
Air temperature in December, °F
The highest day temperature during December of 2024 was 49°F. At the same time the lowest night temperature was 11°F. Daily and nightly averages during December were 35.0°F and 30.3°F.
Sea water temperature in Chicago in December, °F
The average sea water temperature in December of 2024 was 40.3°F. The highest and lowest sea temperatures during the month were 47.3°F and 35.1°F.
Mostly all days in December are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in Chicago in December is 1.4 in. Other months of the year show relatively similar values.
The average wind speed value in December is 10.7 mph
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 3.7.
Best time for vacation in Chicago
Chicago on a weather map
9 mph
9 mph
9 mph
11 mph
12 mph
12 mph
14 mph
13 mph
