S
M
T
W
T
F
S
27
64°
38°
28
57°
30°
29
55°
34°
30
54°
28°
1
58°
36°
2
60°
36°
3
62°
38°
4
63°
34°
5
55°
34°
6
51°
27°
7
49°
24°
8
48°
26°
9
47°
25°
10
48°
23°
11
46°
23°
12
46°
24°
13
47°
22°
14
49°
25°
15
53°
28°
16
50°
27°
17
46°
24°
18
45°
24°
19
52°
29°
20
55°
31°
21
46°
31°
22
43°
28°
23
44°
21°
24
44°
19°
25
39°
21°
26
43°
25°
27
45°
21°
28
41°
22°
29
40°
18°
30
38°
19°
31
37°
26°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Yellowstone National Park
Yellowstone National Park's October 2026 forecast shows daily high temperatures ranging from 37° to 64°, with overnight lows between 18° and 38°. The average high for October is 49° with an average low of 27°. 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 Yellowstone National Park. See also: November | December | January.
