S
M
T
W
T
F
S
28
71°
19°
29
39°
19°
30
60°
17°
31
66°
29°
1
59°
34°
2
63°
39°
3
51°
31°
4
59°
32°
5
73°
43°
6
70°
37°
7
70°
37°
8
70°
40°
9
52°
33°
10
52°
28°
11
50°
24°
12
69°
29°
13
72°
32°
14
53°
28°
15
61°
22°
16
50°
26°
17
38°
10°
18
59°
10°
19
41°
18°
20
51°
17°
21
51°
25°
22
55°
24°
23
45°
8°
24
45°
4°
25
16°
0°
26
23°
-1°
27
35°
5°
28
39°
7°
29
35°
20°
30
35°
13°
31
19°
4°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Helena
Helena's January 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for January is ° with an average low of °. 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 Helena. See also: February | March | April.
