S
M
T
W
T
F
S
27
71°
54°
28
66°
60°
29
72°
58°
30
76°
53°
1
75°
63°
2
69°
54°
3
63°
45°
4
70°
44°
5
62°
50°
6
62°
42°
7
71°
53°
8
68°
49°
9
67°
47°
10
62°
47°
11
64°
53°
12
68°
63°
13
74°
57°
14
65°
48°
15
59°
52°
16
59°
40°
17
51°
39°
18
56°
48°
19
61°
47°
20
63°
46°
21
60°
49°
22
57°
45°
23
58°
47°
24
56°
41°
25
56°
47°
26
58°
44°
27
55°
36°
28
47°
35°
29
47°
40°
30
49°
45°
31
55°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Dunnville
Dunnville's October 2026 forecast shows daily high temperatures ranging from 47° to 74°, with overnight lows between 35° and 63°. The average high for October is 58° with an average low of 46°. 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 Dunnville. See also: November | December | January.