S
M
T
W
T
F
S
26
57°
45°
27
71°
44°
28
70°
50°
29
53°
43°
30
53°
41°
1
46°
39°
2
47°
34°
3
61°
33°
4
74°
50°
5
68°
47°
6
54°
43°
7
56°
40°
8
59°
43°
9
71°
51°
10
59°
47°
11
57°
39°
12
65°
37°
13
63°
45°
14
60°
41°
15
69°
37°
16
74°
52°
17
84°
60°
18
88°
65°
19
87°
53°
20
57°
45°
21
58°
50°
22
61°
56°
23
68°
60°
24
72°
59°
25
70°
61°
26
75°
59°
27
76°
58°
28
76°
59°
29
74°
57°
30
77°
61°
31
78°
63°
1
76°
55°
2
76°
60°
3
74°
59°
4
69°
58°
5
70°
58°
6
72°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Vermilion
Vermilion's May 2026 forecast shows daily high temperatures ranging from 57° to 87°, with overnight lows between 45° and 63°. The average high for May is 72° with an average low of 57°. 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 Vermilion. See also: June | July | August.