S
M
T
W
T
F
S
27
66°
28°
28
61°
30°
29
63°
30°
30
66°
27°
1
66°
27°
2
70°
32°
3
72°
28°
4
75°
32°
5
72°
36°
6
72°
31°
7
70°
31°
8
71°
32°
9
70°
35°
10
61°
29°
11
54°
25°
12
59°
27°
13
60°
28°
14
55°
26°
15
51°
22°
16
53°
25°
17
46°
17°
18
47°
21°
19
52°
23°
20
54°
23°
21
53°
24°
22
53°
26°
23
52°
25°
24
45°
18°
25
47°
24°
26
50°
23°
27
45°
13°
28
43°
21°
29
49°
23°
30
48°
23°
31
47°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in West Yellowstone
West Yellowstone's October 2026 forecast shows daily high temperatures ranging from 43° to 75°, with overnight lows between 13° and 36°. The average high for October is 57° with an average low of 26°. 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 West Yellowstone. See also: November | December | January.
