S
M
T
W
T
F
S
30
80°
52°
31
81°
54°
1
80°
51°
2
81°
53°
3
80°
53°
4
80°
52°
5
79°
52°
6
78°
50°
7
77°
51°
8
77°
51°
9
76°
50°
10
77°
50°
11
79°
49°
12
78°
50°
13
78°
50°
14
77°
49°
15
75°
50°
16
76°
48°
17
74°
48°
18
72°
45°
19
70°
36°
20
65°
40°
21
66°
47°
22
67°
38°
23
65°
38°
24
64°
40°
25
67°
45°
26
71°
46°
27
64°
43°
28
64°
37°
29
63°
37°
30
64°
38°
1
66°
44°
2
67°
45°
3
62°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Manchester
Manchester's September 2026 forecast shows daily high temperatures ranging from 62° to 81°, with overnight lows between 36° and 54°. The average high for September is 73° 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 Manchester. See also: October | November | December.