S
M
T
W
T
F
S
26
29°
20°
27
38°
19°
28
48°
24°
29
58°
28°
30
68°
33°
1
68°
40°
2
68°
36°
3
62°
39°
4
43°
30°
5
49°
22°
6
59°
28°
7
68°
45°
8
64°
38°
9
62°
34°
10
73°
41°
11
67°
45°
12
72°
41°
13
76°
44°
14
61°
44°
15
44°
33°
16
41°
31°
17
55°
34°
18
61°
37°
19
64°
43°
20
61°
43°
21
65°
44°
22
64°
42°
23
63°
42°
24
69°
41°
25
69°
44°
26
65°
43°
27
65°
44°
28
71°
47°
29
78°
54°
30
65°
48°
31
67°
47°
1
69°
48°
2
70°
49°
3
71°
49°
4
69°
48°
5
62°
48°
6
62°
47°
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 41° to 78°, with overnight lows between 31° and 54°. The average high for May is 65° with an average low of 44°. 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.