S
M
T
W
T
F
S
26
65°
47°
27
75°
49°
28
71°
55°
29
64°
46°
30
57°
42°
1
52°
40°
2
51°
34°
3
61°
34°
4
73°
58°
5
67°
46°
6
55°
40°
7
56°
39°
8
63°
47°
9
65°
49°
10
66°
49°
11
62°
47°
12
63°
49°
13
67°
52°
14
68°
50°
15
68°
51°
16
72°
55°
17
75°
52°
18
74°
57°
19
75°
56°
20
77°
52°
21
74°
52°
22
69°
48°
23
67°
48°
24
69°
50°
25
68°
52°
26
68°
50°
27
69°
50°
28
70°
51°
29
71°
51°
30
71°
55°
31
77°
59°
1
72°
54°
2
74°
55°
3
75°
59°
4
76°
58°
5
78°
61°
6
81°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Casstown
Casstown's May 2026 forecast shows daily high temperatures ranging from 55° to 81°, with overnight lows between 39° and 63°. The average high for May is 70° 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 Casstown. See also: June | July | August.