S
M
T
W
T
F
S
27
68°
44°
28
70°
46°
29
71°
47°
30
64°
44°
1
60°
46°
2
61°
47°
3
70°
37°
4
63°
36°
5
55°
31°
6
54°
31°
7
51°
30°
8
49°
32°
9
51°
35°
10
54°
38°
11
62°
43°
12
61°
39°
13
62°
35°
14
59°
35°
15
57°
32°
16
52°
28°
17
49°
35°
18
52°
32°
19
52°
40°
20
58°
37°
21
57°
38°
22
61°
36°
23
55°
30°
24
51°
34°
25
54°
28°
26
55°
21°
27
42°
17°
28
40°
19°
29
39°
26°
30
40°
28°
31
51°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Grassy Butte
Grassy Butte's October 2026 forecast shows daily high temperatures ranging from 39° to 71°, with overnight lows between 17° and 47°. The average high for October is 56° with an average low of 34°. 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 Grassy Butte. See also: November | December | January.