S
M
T
W
T
F
S
26
60°
43°
27
73°
42°
28
69°
51°
29
54°
45°
30
54°
40°
1
45°
36°
2
42°
33°
3
59°
31°
4
73°
48°
5
68°
47°
6
56°
41°
7
56°
39°
8
59°
42°
9
69°
51°
10
60°
43°
11
62°
38°
12
66°
40°
13
63°
43°
14
61°
42°
15
69°
36°
16
73°
53°
17
83°
59°
18
86°
66°
19
86°
65°
20
67°
48°
21
64°
46°
22
60°
47°
23
73°
55°
24
72°
59°
25
75°
54°
26
80°
60°
27
79°
58°
28
74°
52°
29
74°
51°
30
71°
51°
31
73°
50°
1
74°
53°
2
74°
53°
3
77°
58°
4
78°
59°
5
78°
59°
6
79°
56°
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 71° to 80°, with overnight lows between 50° and 60°. The average high for May is 76° with an average low of 55°. 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.
