S
M
T
W
T
F
S
30
76°
59°
31
80°
58°
1
83°
58°
2
83°
57°
3
82°
50°
4
74°
57°
5
75°
58°
6
82°
54°
7
79°
49°
8
73°
48°
9
72°
55°
10
73°
56°
11
79°
55°
12
80°
56°
13
80°
54°
14
79°
46°
15
72°
47°
16
69°
51°
17
69°
45°
18
70°
44°
19
70°
41°
20
68°
42°
21
67°
46°
22
68°
50°
23
73°
48°
24
75°
51°
25
75°
51°
26
74°
50°
27
75°
51°
28
74°
46°
29
72°
45°
30
66°
46°
1
70°
45°
2
74°
48°
3
73°
49°
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 66° to 83°, with overnight lows between 41° and 59°. The average high for September is 74° with an average low of 50°. 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.