S
M
T
W
T
F
S
27
26°
-1°
28
24°
4°
29
25°
-1°
30
25°
9°
31
26°
17°
1
35°
13°
2
35°
9°
3
30°
2°
4
22°
9°
5
28°
16°
6
31°
19°
7
35°
13°
8
37°
-1°
9
37°
3°
10
18°
12°
11
25°
7°
12
28°
9°
13
25°
2°
14
23°
-4°
15
20°
6°
16
21°
12°
17
27°
12°
18
28°
5°
19
35°
-5°
20
35°
-6°
21
16°
7°
22
24°
11°
23
32°
12°
24
34°
16°
25
34°
16°
26
35°
15°
27
34°
15°
28
35°
13°
29
37°
15°
30
32°
10°
31
20°
4°
1
36°
-1°
2
Hist. Avg.
30°
8°
3
Hist. Avg.
30°
8°
4
Hist. Avg.
30°
8°
5
Hist. Avg.
31°
8°
6
Hist. Avg.
31°
8°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Johnsburg
Johnsburg's January 2027 forecast shows daily high temperatures ranging from 16° to 37°, with overnight lows between -6° and 19°. The average high for January is 29° with an average low of 8°. 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 Johnsburg. See also: February | March | April.