18.12
thu
thu
Day

43°F
N 22 mph
Precip.
0%
0%
Night

25°F
E 19 mph
Precip.
0%
0%
19.12
fri
fri
Day

16°F
SE 16 mph
Precip.
0%
0%
Night

23°F
N 9 mph
Precip.
0%
0%
20.12
sat
sat
Day

34°F
NE 18 mph
Precip.
0%
0%
Night

28°F
E 13 mph
Precip.
0%
0%
21.12
sun
sun
Day

30°F
SE 14 mph
Precip.
0%
0%
Night

30°F
W 5 mph
Precip.
100%
100%
22.12
mon
mon
Day

32°F
NW 10 mph
Precip.
0%
0%
Night

32°F
NW 11 mph
Precip.
0%
0%
23.12
tue
tue
Day

36°F
NE 9 mph
Precip.
0%
0%
Night

34°F
S 4 mph
Precip.
0%
0%
24.12
wed
wed
Day

37°F
NW 6 mph
Precip.
0%
0%
Night

37°F
W 9 mph
Precip.
100%
100%
25.12
thu
thu
Day

39°F
W 7 mph
Precip.
45%
45%
Night

37°F
NW 7 mph
Precip.
0%
0%
26.12
fri
fri
Day

48°F
N 11 mph
Precip.
0%
0%
Night

48°F
SE 11 mph
Precip.
0%
0%
27.12
sat
sat
Day

39°F
SE 9 mph
Precip.
0%
0%
Night

34°F
SE 11 mph
Precip.
0%
0%
28.12
sun
sun
Day

32°F
NW 11 mph
Precip.
0%
0%
Night

30°F
W 14 mph
Precip.
0%
0%
29.12
mon
mon
Day

28°F
NW 17 mph
Precip.
100%
100%
Night

36°F
NW 19 mph
Precip.
100%
100%
30.12
tue
tue
Day

39°F
NE 20 mph
Precip.
68%
68%
Night

34°F
E 17 mph
Precip.
28%
28%
31.12
wed
wed
Day

30°F
E 18 mph
Precip.
79%
79%
Night

25°F
E 17 mph
Precip.
74%
74%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 40.6°F. The highest and lowest sea temperatures during the month were 44.8°F and 36.3°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 34.7°F. The highest and lowest sea temperatures during the month were 37.6°F and 33.3°F.
Air temperature in Chicago, °F
Precipitation total in Chicago, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Chicago
Chicago on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Chicago
Local time: 03:36
December 18, thursday
0600

45°F
N
17 mph
17 mph
0900

43°F
N
20 mph
20 mph
1200

43°F
N
22 mph
22 mph
1500

39°F
E
19 mph
19 mph
1800

37°F
E
12 mph
12 mph
2100

30°F
E
17 mph
17 mph
December 19, friday
0000

25°F
E
19 mph
19 mph
0300

18°F
E
20 mph
20 mph



























