S
M
T
W
T
F
S
27
70°
45°
28
68°
48°
29
70°
59°
30
77°
65°
1
77°
63°
2
66°
53°
3
63°
52°
4
65°
54°
5
60°
52°
6
63°
53°
7
67°
55°
8
62°
54°
9
63°
51°
10
60°
52°
11
63°
55°
12
64°
41°
13
62°
48°
14
58°
47°
15
59°
50°
16
63°
54°
17
68°
55°
18
67°
54°
19
69°
54°
20
62°
53°
21
67°
47°
22
56°
45°
23
55°
46°
24
60°
51°
25
66°
52°
26
66°
46°
27
54°
42°
28
54°
46°
29
64°
52°
30
65°
52°
31
65°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Grand River
Grand River's October 2026 forecast shows daily high temperatures ranging from 54° to 77°, with overnight lows between 41° and 65°. The average high for October is 64° with an average low of 52°. 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 River. See also: November | December | January.