S
M
T
W
T
F
S
26
62°
45°
27
62°
47°
28
63°
46°
29
62°
44°
30
63°
48°
1
65°
47°
2
64°
44°
3
63°
47°
4
63°
44°
5
64°
44°
6
66°
54°
7
74°
53°
8
70°
50°
9
65°
52°
10
66°
47°
11
64°
46°
12
64°
45°
13
65°
47°
14
66°
50°
15
67°
51°
16
68°
52°
17
72°
57°
18
72°
49°
19
68°
48°
20
69°
50°
21
70°
59°
22
75°
60°
23
76°
60°
24
78°
59°
25
75°
61°
26
80°
62°
27
80°
58°
28
73°
53°
29
83°
61°
30
83°
56°
31
79°
55°
1
80°
54°
2
78°
55°
3
77°
60°
4
80°
61°
5
75°
61°
6
75°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Seymour
Seymour's May 2026 forecast shows daily high temperatures ranging from 62° to 83°, with overnight lows between 44° and 62°. The average high for May is 71° with an average low of 52°. 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 Seymour. See also: June | July | August.