S
M
T
W
T
F
S
27
21°
8°
28
25°
6°
29
24°
-4°
30
19°
-6°
31
14°
-7°
1
9°
-6°
2
9°
-7°
3
10°
-3°
4
14°
-3°
5
15°
5°
6
16°
6°
7
19°
7°
8
23°
7°
9
24°
5°
10
24°
-6°
11
20°
-9°
12
12°
1°
13
24°
-8°
14
23°
5°
15
24°
5°
16
24°
4°
17
23°
6°
18
24°
7°
19
25°
5°
20
25°
4°
21
22°
0°
22
18°
4°
23
18°
4°
24
24°
-2°
25
22°
2°
26
12°
-8°
27
13°
-12°
28
18°
-11°
29
9°
-10°
30
13°
-11°
31
10°
5°
1
24°
-10°
2
26°
-13°
3
8°
-1°
4
10°
-12°
5
16°
-13°
6
8°
-1°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Gary
Gary's January 2027 forecast shows daily high temperatures ranging from 8° to 26°, with overnight lows between -13° and 8°. The average high for January is 18° with an average low of -2°. 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 Gary. See also: February | March | April.
