S
M
T
W
T
F
S
26
63°
46°
27
59°
45°
28
58°
43°
29
58°
46°
30
59°
45°
1
60°
47°
2
61°
46°
3
61°
42°
4
60°
41°
5
59°
41°
6
62°
42°
7
64°
46°
8
64°
48°
9
65°
46°
10
66°
45°
11
63°
43°
12
61°
44°
13
61°
43°
14
62°
44°
15
64°
44°
16
65°
45°
17
65°
47°
18
66°
47°
19
66°
45°
20
67°
46°
21
67°
48°
22
68°
50°
23
70°
55°
24
69°
56°
25
77°
55°
26
73°
53°
27
69°
57°
28
78°
58°
29
78°
51°
30
75°
50°
31
71°
51°
1
70°
52°
2
73°
51°
3
76°
57°
4
80°
58°
5
80°
59°
6
74°
59°
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 58° to 80°, with overnight lows between 41° and 59°. The average high for May is 67° 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 Middletown. See also: June | July | August.
