S
M
T
W
T
F
S
30
90°
60°
31
81°
65°
1
82°
64°
2
88°
68°
3
90°
69°
4
90°
67°
5
89°
62°
6
87°
58°
7
80°
57°
8
80°
60°
9
81°
65°
10
83°
62°
11
79°
57°
12
77°
56°
13
78°
61°
14
79°
62°
15
82°
54°
16
85°
53°
17
75°
53°
18
74°
54°
19
74°
53°
20
73°
52°
21
73°
52°
22
74°
51°
23
75°
51°
24
77°
56°
25
79°
59°
26
80°
57°
27
81°
56°
28
73°
59°
29
79°
50°
30
80°
51°
1
73°
54°
2
71°
48°
3
69°
53°
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 69° to 90°, with overnight lows between 48° and 69°. The average high for September is 79° 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.