S
M
T
W
T
F
S
27
58°
44°
28
58°
43°
29
61°
44°
30
62°
46°
1
64°
39°
2
55°
39°
3
54°
42°
4
58°
38°
5
60°
40°
6
53°
34°
7
54°
32°
8
53°
39°
9
59°
43°
10
62°
44°
11
64°
45°
12
62°
45°
13
63°
38°
14
63°
38°
15
55°
37°
16
56°
42°
17
56°
40°
18
58°
40°
19
57°
42°
20
57°
44°
21
61°
42°
22
61°
36°
23
60°
28°
24
56°
29°
25
43°
30°
26
44°
31°
27
44°
36°
28
49°
39°
29
54°
40°
30
55°
39°
31
56°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Gravenhurst
Gravenhurst's October 2026 forecast shows daily high temperatures ranging from 43° to 64°, with overnight lows between 28° and 46°. 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 Gravenhurst. See also: November | December | January.