S
M
T
W
T
F
S
30
91°
66°
31
91°
67°
1
94°
69°
2
95°
69°
3
96°
71°
4
97°
71°
5
93°
70°
6
87°
69°
7
86°
65°
8
88°
65°
9
91°
70°
10
86°
66°
11
82°
64°
12
87°
62°
13
89°
61°
14
87°
60°
15
84°
60°
16
82°
57°
17
85°
60°
18
82°
57°
19
80°
56°
20
78°
52°
21
85°
57°
22
81°
57°
23
83°
56°
24
84°
57°
25
84°
57°
26
83°
56°
27
84°
56°
28
84°
55°
29
83°
56°
30
83°
55°
1
82°
54°
2
78°
46°
3
70°
42°
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 70° to 91°, with overnight lows between 42° and 70°. The average high for September is 83° with an average low of 58°. 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.