S
M
T
W
T
F
S
27
75°
28°
28
69°
45°
29
67°
42°
30
78°
38°
1
76°
36°
2
69°
35°
3
82°
39°
4
70°
37°
5
79°
45°
6
89°
51°
7
80°
41°
8
79°
35°
9
79°
47°
10
87°
52°
11
68°
41°
12
47°
37°
13
45°
37°
14
51°
34°
15
56°
38°
16
54°
21°
17
70°
26°
18
82°
36°
19
69°
31°
20
71°
35°
21
74°
37°
22
74°
39°
23
74°
42°
24
74°
27°
25
50°
25°
26
48°
24°
27
55°
27°
28
61°
30°
29
62°
21°
30
58°
36°
31
57°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Greybull
Greybull's October 2026 forecast shows daily high temperatures ranging from 57° to 58°, with overnight lows between 36° and 36°. The average high for October is 58° with an average low of 36°. 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 Greybull. See also: November | December | January.