S
M
T
W
T
F
S
30
70°
47°
31
69°
45°
1
70°
47°
2
70°
49°
3
71°
51°
4
72°
51°
5
69°
54°
6
76°
51°
7
75°
50°
8
71°
44°
9
68°
44°
10
68°
48°
11
70°
49°
12
72°
50°
13
70°
46°
14
70°
47°
15
73°
48°
16
71°
49°
17
72°
50°
18
70°
49°
19
71°
49°
20
71°
48°
21
70°
47°
22
71°
41°
23
66°
44°
24
61°
45°
25
62°
43°
26
61°
39°
27
61°
39°
28
60°
40°
29
60°
40°
30
61°
38°
1
59°
38°
2
60°
37°
3
59°
39°
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 76°, with overnight lows between 37° and 54°. The average high for September is 68° with an average low of 46°. 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.
