S
M
T
W
T
F
S
30
83°
58°
31
79°
63°
1
71°
62°
2
75°
62°
3
84°
63°
4
84°
68°
5
79°
59°
6
N/A
7
81°
56°
8
83°
62°
9
80°
71°
10
84°
62°
11
76°
54°
12
75°
60°
13
80°
62°
14
81°
57°
15
77°
60°
16
76°
57°
17
75°
56°
18
74°
56°
19
75°
57°
20
73°
55°
21
73°
57°
22
67°
57°
23
67°
56°
24
69°
56°
25
70°
55°
26
72°
53°
27
68°
49°
28
68°
52°
29
73°
55°
30
74°
55°
1
73°
54°
2
72°
55°
3
71°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Middletown
Middletown's September 2026 forecast shows daily high temperatures ranging from 67° to 84°, with overnight lows between 49° and 71°. The average high for September is 74° with an average low of 57°. 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.
