S
M
T
W
T
F
S
28
90°
56°
29
91°
58°
30
89°
59°
1
88°
55°
2
90°
56°
3
90°
61°
4
87°
58°
5
86°
56°
6
76°
61°
7
85°
60°
8
74°
50°
9
73°
44°
10
72°
37°
11
80°
49°
12
78°
45°
13
80°
44°
14
82°
50°
15
81°
50°
16
77°
56°
17
79°
51°
18
87°
64°
19
67°
45°
20
70°
40°
21
70°
45°
22
64°
44°
23
62°
35°
24
65°
33°
25
63°
49°
26
64°
51°
27
56°
50°
28
59°
52°
29
55°
48°
30
61°
43°
31
61°
40°
1
52°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Helena
Helena's October 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for October 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 October weather will actually feel in Helena. See also: November | December | January.
