S
M
T
W
T
F
S
27
57°
30°
28
71°
36°
29
69°
34°
30
64°
47°
1
69°
38°
2
78°
40°
3
74°
39°
4
77°
37°
5
81°
37°
6
77°
36°
7
74°
33°
8
71°
33°
9
75°
43°
10
47°
34°
11
39°
32°
12
47°
27°
13
56°
31°
14
60°
37°
15
58°
32°
16
55°
34°
17
59°
37°
18
58°
38°
19
59°
37°
20
60°
35°
21
56°
34°
22
53°
32°
23
58°
33°
24
57°
32°
25
57°
31°
26
56°
31°
27
56°
32°
28
55°
30°
29
53°
28°
30
54°
32°
31
47°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Missoula
Missoula's October 2026 forecast shows daily high temperatures ranging from 39° to 75°, with overnight lows between 27° and 43°. 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 Missoula. See also: November | December | January.
