S
M
T
W
T
F
S
30
91°
67°
31
92°
66°
1
92°
67°
2
91°
65°
3
90°
62°
4
86°
62°
5
88°
63°
6
90°
64°
7
89°
65°
8
88°
64°
9
88°
65°
10
89°
63°
11
88°
60°
12
82°
60°
13
81°
62°
14
82°
62°
15
81°
61°
16
81°
62°
17
82°
61°
18
82°
58°
19
79°
53°
20
78°
52°
21
77°
54°
22
79°
55°
23
81°
58°
24
82°
59°
25
83°
58°
26
82°
54°
27
81°
56°
28
77°
52°
29
77°
50°
30
75°
54°
1
Hist. Avg.
78°
52°
2
Hist. Avg.
78°
52°
3
Hist. Avg.
78°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Middleton
Middleton's September 2026 forecast shows daily high temperatures ranging from 75° to 92°, with overnight lows between 50° and 67°. The average high for September is 84° with an average low of 60°. 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 Middleton. See also: October | November | December.
