S
M
T
W
T
F
S
1
61°
41°
2
54°
37°
3
68°
52°
4
79°
57°
5
77°
61°
6
84°
59°
7
82°
55°
8
66°
52°
9
75°
46°
10
75°
59°
11
79°
46°
12
54°
37°
13
66°
37°
14
70°
36°
15
73°
46°
16
70°
27°
17
36°
25°
18
50°
27°
19
70°
39°
20
79°
43°
21
79°
55°
22
86°
54°
23
75°
41°
24
64°
37°
25
73°
39°
26
82°
61°
27
73°
41°
28
57°
30°
29
72°
32°
30
73°
59°
31
84°
63°
1
82°
66°
2
84°
63°
3
86°
68°
4
86°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Dunnville
Dunnville's March 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for March is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how March weather will actually feel in Dunnville. See also: April | May | June.