S
M
T
W
T
F
S
27
66°
44°
28
65°
40°
29
67°
46°
30
62°
44°
1
60°
48°
2
70°
47°
3
59°
36°
4
70°
43°
5
71°
40°
6
Hist. Avg.
63°
38°
7
Hist. Avg.
63°
37°
8
Hist. Avg.
62°
37°
9
Hist. Avg.
62°
36°
10
Hist. Avg.
61°
36°
11
Hist. Avg.
60°
36°
12
Hist. Avg.
60°
35°
13
Hist. Avg.
59°
35°
14
Hist. Avg.
59°
34°
15
Hist. Avg.
58°
34°
16
Hist. Avg.
58°
33°
17
Hist. Avg.
57°
33°
18
Hist. Avg.
56°
33°
19
Hist. Avg.
56°
32°
20
Hist. Avg.
55°
32°
21
Hist. Avg.
55°
31°
22
Hist. Avg.
54°
31°
23
Hist. Avg.
54°
31°
24
Hist. Avg.
53°
30°
25
Hist. Avg.
53°
30°
26
Hist. Avg.
52°
30°
27
Hist. Avg.
52°
29°
28
Hist. Avg.
51°
29°
29
Hist. Avg.
51°
28°
30
Hist. Avg.
50°
28°
31
Hist. Avg.
50°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Helena West Side
Helena West Side's October 2026 forecast shows daily high temperatures ranging from 59° to 71°, with overnight lows between 36° and 48°. The average high for October is 66° with an average low of 43°. 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 West Side. See also: November | December | January.