S
M
T
W
T
F
S
27
78°
55°
28
79°
52°
29
72°
45°
30
70°
45°
1
71°
48°
2
78°
47°
3
78°
51°
4
77°
51°
5
78°
52°
6
78°
53°
7
76°
52°
8
78°
45°
9
74°
49°
10
73°
43°
11
66°
48°
12
66°
50°
13
67°
50°
14
74°
49°
15
74°
49°
16
75°
45°
17
74°
37°
18
68°
36°
19
62°
36°
20
62°
34°
21
60°
44°
22
62°
43°
23
70°
37°
24
65°
33°
25
59°
32°
26
57°
39°
27
60°
41°
28
65°
32°
29
67°
30°
30
59°
31°
31
68°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Grantsville
Grantsville's October 2026 forecast shows daily high temperatures ranging from 57° to 79°, with overnight lows between 30° and 55°. The average high for October is 70° with an average low of 43°. 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 Grantsville. See also: November | December | January.
