S
M
T
W
T
F
S
30
88°
55°
31
84°
50°
1
82°
52°
2
88°
51°
3
87°
48°
4
80°
50°
5
80°
52°
6
85°
45°
7
81°
47°
8
79°
45°
9
79°
44°
10
78°
44°
11
79°
50°
12
82°
49°
13
85°
46°
14
85°
51°
15
84°
53°
16
87°
53°
17
85°
42°
18
75°
46°
19
76°
49°
20
84°
51°
21
85°
43°
22
81°
40°
23
73°
43°
24
74°
42°
25
82°
47°
26
73°
45°
27
77°
43°
28
Hist. Avg.
76°
42°
29
Hist. Avg.
75°
42°
30
Hist. Avg.
75°
42°
1
Hist. Avg.
74°
42°
2
Hist. Avg.
74°
41°
3
Hist. Avg.
74°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Middleton
Middleton's September 2026 forecast shows daily high temperatures ranging from 73° to 88°, with overnight lows between 40° and 55°. The average high for September is 81° with an average low of 47°. 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.
