S
M
T
W
T
F
S
30
90°
66°
31
N/A
1
97°
72°
2
100°
74°
3
101°
74°
4
97°
69°
5
87°
65°
6
82°
62°
7
85°
65°
8
82°
64°
9
83°
63°
10
84°
63°
11
84°
62°
12
79°
60°
13
79°
58°
14
84°
64°
15
81°
63°
16
77°
63°
17
77°
61°
18
78°
56°
19
75°
54°
20
75°
54°
21
76°
55°
22
78°
56°
23
80°
60°
24
82°
60°
25
81°
59°
26
78°
59°
27
76°
60°
28
76°
59°
29
79°
58°
30
76°
57°
1
72°
54°
2
72°
55°
3
75°
55°
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 101°, with overnight lows between 54° and 74°. The average high for September is 81° with an average low of 61°. 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.