S
M
T
W
T
F
S
30
81°
62°
31
76°
64°
1
70°
60°
2
74°
60°
3
77°
64°
4
84°
68°
5
74°
63°
6
71°
59°
7
79°
58°
8
82°
60°
9
76°
62°
10
85°
68°
11
76°
59°
12
75°
53°
13
71°
63°
14
75°
57°
15
72°
52°
16
71°
54°
17
77°
65°
18
82°
64°
19
67°
57°
20
64°
57°
21
66°
56°
22
64°
53°
23
64°
52°
24
64°
52°
25
61°
52°
26
59°
55°
27
65°
59°
28
64°
56°
29
66°
55°
30
67°
56°
1
71°
57°
2
72°
64°
3
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Middletown
Middletown's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Middletown. See also: October | November | December.
