S
M
T
W
T
F
S
26
40°
16°
27
44°
22°
28
53°
20°
29
63°
28°
30
65°
28°
1
60°
38°
2
68°
29°
3
59°
35°
4
56°
27°
5
61°
26°
6
65°
38°
7
66°
32°
8
52°
36°
9
67°
33°
10
67°
37°
11
67°
35°
12
70°
33°
13
72°
45°
14
60°
38°
15
56°
31°
16
58°
37°
17
59°
41°
18
70°
38°
19
69°
45°
20
63°
44°
21
73°
35°
22
73°
39°
23
75°
41°
24
50°
41°
25
65°
30°
26
67°
47°
27
77°
40°
28
78°
45°
29
82°
55°
30
67°
50°
31
69°
48°
1
74°
40°
2
74°
46°
3
71°
52°
4
80°
57°
5
71°
54°
6
60°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fort Vermilion
Fort Vermilion's May 2026 forecast shows daily high temperatures ranging from 60° to 80°, with overnight lows between 40° and 57°. The average high for May is 72° with an average low of 49°. 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 Fort Vermilion. See also: June | July | August.