S
M
T
W
T
F
S
30
84°
59°
31
74°
56°
1
68°
60°
2
71°
61°
3
75°
63°
4
83°
64°
5
71°
59°
6
71°
54°
7
80°
53°
8
78°
55°
9
73°
52°
10
86°
69°
11
77°
49°
12
71°
45°
13
67°
62°
14
71°
48°
15
68°
42°
16
79°
53°
17
76°
64°
18
77°
56°
19
62°
47°
20
62°
44°
21
66°
50°
22
62°
44°
23
62°
42°
24
64°
42°
25
64°
43°
26
61°
54°
27
60°
54°
28
59°
54°
29
63°
54°
30
70°
54°
1
74°
57°
2
75°
54°
3
70°
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 59° to 75°, with overnight lows between 52° and 57°. The average high for September is 67° with an average low of 54°. 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.
