S
M
T
W
T
F
S
30
88°
55°
31
79°
59°
1
79°
59°
2
84°
63°
3
88°
64°
4
88°
63°
5
89°
57°
6
84°
54°
7
80°
53°
8
79°
56°
9
80°
60°
10
81°
57°
11
77°
52°
12
75°
51°
13
76°
57°
14
77°
55°
15
78°
49°
16
81°
48°
17
73°
48°
18
73°
49°
19
74°
48°
20
72°
48°
21
72°
47°
22
73°
47°
23
74°
48°
24
76°
53°
25
78°
55°
26
79°
50°
27
80°
51°
28
72°
55°
29
75°
47°
30
78°
48°
1
73°
51°
2
70°
45°
3
68°
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 68° to 89°, with overnight lows between 45° and 64°. The average high for September is 78° with an average low of 53°. 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.