S
M
T
W
T
F
S
30
87°
66°
31
86°
65°
1
82°
65°
2
79°
64°
3
80°
60°
4
80°
59°
5
82°
60°
6
84°
62°
7
85°
62°
8
85°
63°
9
84°
62°
10
86°
63°
11
84°
53°
12
78°
61°
13
82°
53°
14
79°
54°
15
78°
55°
16
84°
57°
17
84°
60°
18
85°
60°
19
83°
52°
20
79°
52°
21
76°
56°
22
78°
53°
23
75°
53°
24
77°
57°
25
75°
57°
26
73°
56°
27
72°
53°
28
73°
50°
29
77°
48°
30
77°
50°
1
79°
54°
2
79°
45°
3
80°
44°
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 72° to 87°, with overnight lows between 44° and 66°. The average high for September is 80° with an average low of 57°. 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.