S
M
T
W
T
F
S
27
79°
48°
28
79°
47°
29
77°
59°
30
83°
50°
1
66°
39°
2
61°
35°
3
69°
42°
4
70°
39°
5
79°
35°
6
83°
54°
7
73°
43°
8
N/A
9
73°
60°
10
83°
53°
11
63°
39°
12
47°
41°
13
53°
45°
14
55°
48°
15
55°
43°
16
49°
38°
17
54°
39°
18
59°
43°
19
59°
42°
20
57°
43°
21
54°
34°
22
60°
42°
23
53°
38°
24
58°
41°
25
58°
38°
26
55°
39°
27
52°
32°
28
47°
38°
29
55°
38°
30
47°
37°
31
54°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Grenville
Grenville's October 2026 forecast shows daily high temperatures ranging from 47° to 83°, with overnight lows between 32° and 60°. The average high for October is 57° with an average low of 41°. 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 Grenville. See also: November | December | January.