S
M
T
W
T
F
S
26
55°
46°
27
62°
38°
28
62°
34°
29
65°
42°
30
67°
53°
1
60°
49°
2
56°
46°
3
60°
47°
4
72°
55°
5
75°
56°
6
73°
58°
7
68°
48°
8
65°
47°
9
70°
51°
10
72°
54°
11
70°
55°
12
69°
56°
13
71°
57°
14
75°
54°
15
70°
59°
16
70°
59°
17
71°
58°
18
71°
60°
19
77°
61°
20
78°
61°
21
75°
60°
22
78°
62°
23
78°
62°
24
80°
61°
25
77°
62°
26
73°
61°
27
76°
62°
28
79°
63°
29
77°
63°
30
78°
62°
31
79°
64°
1
78°
63°
2
75°
63°
3
78°
62°
4
74°
61°
5
74°
60°
6
75°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Middletown
Middletown's May 2026 forecast shows daily high temperatures ranging from 56° to 80°, with overnight lows between 46° and 64°. The average high for May is 73° with an average low of 58°. 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 Middletown. See also: June | July | August.
