S
M
T
W
T
F
S
27
69°
49°
28
69°
48°
29
67°
46°
30
62°
45°
1
62°
46°
2
66°
48°
3
67°
46°
4
64°
45°
5
65°
45°
6
65°
44°
7
64°
46°
8
65°
45°
9
65°
45°
10
64°
44°
11
63°
45°
12
57°
34°
13
55°
37°
14
55°
41°
15
56°
32°
16
57°
36°
17
49°
43°
18
58°
40°
19
58°
37°
20
51°
36°
21
49°
33°
22
52°
31°
23
49°
34°
24
53°
39°
25
55°
36°
26
52°
34°
27
47°
29°
28
44°
26°
29
42°
32°
30
44°
32°
31
45°
26°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Grand Valley
Grand Valley's October 2026 forecast shows daily high temperatures ranging from 42° to 69°, with overnight lows between 26° and 49°. The average high for October is 57° with an average low of 39°. 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 Grand Valley. See also: November | December | January.
