S
M
T
W
T
F
S
27
66°
28°
28
61°
30°
29
63°
30°
30
66°
27°
1
66°
27°
2
68°
27°
3
70°
27°
4
73°
23°
5
75°
27°
6
73°
27°
7
73°
27°
8
75°
31°
9
70°
38°
10
56°
35°
11
44°
29°
12
47°
27°
13
53°
29°
14
55°
24°
15
53°
21°
16
50°
22°
17
51°
25°
18
53°
26°
19
54°
25°
20
48°
20°
21
53°
26°
22
53°
25°
23
50°
20°
24
50°
21°
25
49°
20°
26
48°
19°
27
49°
19°
28
47°
18°
29
45°
17°
30
44°
20°
31
45°
23°
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 44° to 75°, with overnight lows between 17° and 38°. The average high for October is 53° with an average low of 24°. 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.
