S
M
T
W
T
F
S
27
38°
31°
28
41°
32°
29
42°
30°
30
43°
28°
31
42°
26°
1
39°
23°
2
31°
22°
3
32°
24°
4
34°
25°
5
37°
25°
6
37°
19°
7
33°
20°
8
29°
25°
9
33°
19°
10
32°
18°
11
29°
19°
12
30°
21°
13
31°
23°
14
35°
25°
15
37°
25°
16
31°
26°
17
Hist. Avg.
32°
19°
18
Hist. Avg.
32°
19°
19
Hist. Avg.
32°
19°
20
Hist. Avg.
32°
19°
21
Hist. Avg.
32°
19°
22
Hist. Avg.
32°
19°
23
Hist. Avg.
32°
19°
24
Hist. Avg.
32°
19°
25
Hist. Avg.
32°
19°
26
Hist. Avg.
33°
19°
27
Hist. Avg.
33°
19°
28
Hist. Avg.
33°
19°
29
Hist. Avg.
33°
19°
30
Hist. Avg.
33°
19°
31
Hist. Avg.
33°
19°
1
Hist. Avg.
33°
19°
2
Hist. Avg.
34°
20°
3
Hist. Avg.
34°
20°
4
Hist. Avg.
34°
20°
5
Hist. Avg.
34°
20°
6
Hist. Avg.
34°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Chicago
Chicago's January 2027 forecast shows daily high temperatures ranging from 29° to 43°, with overnight lows between 18° and 32°. The average high for January is 35° with an average low of 24°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Chicago. See also: February | March | April.
