S
M
T
W
T
F
S
27
77°
57°
28
73°
56°
29
77°
56°
30
76°
55°
1
75°
55°
2
76°
54°
3
76°
52°
4
72°
45°
5
67°
43°
6
68°
45°
7
71°
47°
8
73°
51°
9
67°
51°
10
73°
49°
11
65°
44°
12
63°
49°
13
65°
48°
14
Hist. Avg.
67°
40°
15
Hist. Avg.
67°
39°
16
Hist. Avg.
67°
39°
17
Hist. Avg.
66°
39°
18
Hist. Avg.
66°
38°
19
Hist. Avg.
66°
38°
20
Hist. Avg.
66°
38°
21
Hist. Avg.
66°
38°
22
Hist. Avg.
65°
37°
23
Hist. Avg.
65°
37°
24
Hist. Avg.
65°
37°
25
Hist. Avg.
65°
36°
26
Hist. Avg.
64°
36°
27
Hist. Avg.
64°
36°
28
Hist. Avg.
64°
36°
29
Hist. Avg.
64°
36°
30
Hist. Avg.
63°
35°
31
Hist. Avg.
63°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Grundy
Grundy's October 2026 forecast shows daily high temperatures ranging from 63° to 77°, with overnight lows between 43° and 57°. The average high for October is 71° with an average low of 50°. 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 Grundy. See also: November | December | January.