S
M
T
W
T
F
S
27
64°
34°
28
71°
40°
29
71°
44°
30
70°
51°
1
69°
44°
2
78°
43°
3
74°
45°
4
77°
40°
5
79°
40°
6
79°
43°
7
77°
40°
8
77°
50°
9
81°
43°
10
47°
31°
11
35°
29°
12
44°
27°
13
51°
37°
14
54°
36°
15
49°
31°
16
53°
33°
17
60°
37°
18
55°
32°
19
55°
34°
20
56°
35°
21
45°
24°
22
60°
36°
23
59°
34°
24
59°
32°
25
58°
30°
26
57°
30°
27
57°
30°
28
56°
30°
29
47°
27°
30
51°
31°
31
54°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Helena Valley Southeast
Helena Valley Southeast's October 2026 forecast shows daily high temperatures ranging from 35° to 81°, with overnight lows between 24° and 50°. The average high for October is 55° with an average low of 33°. 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 Valley Southeast. See also: November | December | January.
