S
M
T
W
T
F
S
26
51°
39°
27
82°
37°
28
65°
44°
29
55°
41°
30
54°
36°
1
50°
34°
2
47°
35°
3
60°
34°
4
72°
50°
5
69°
47°
6
48°
40°
7
53°
37°
8
58°
40°
9
64°
45°
10
56°
42°
11
55°
40°
12
50°
35°
13
65°
45°
14
48°
43°
15
67°
45°
16
73°
51°
17
70°
57°
18
80°
61°
19
77°
55°
20
59°
39°
21
55°
43°
22
59°
52°
23
59°
53°
24
65°
56°
25
67°
55°
26
67°
53°
27
69°
52°
28
69°
54°
29
70°
55°
30
69°
51°
31
74°
56°
1
70°
56°
2
71°
57°
3
72°
57°
4
67°
56°
5
66°
56°
6
71°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Dunnville
Dunnville's May 2026 forecast shows daily high temperatures ranging from 55° to 80°, with overnight lows between 39° and 61°. The average high for May is 68° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Dunnville. See also: June | July | August.
