S
M
T
W
T
F
S
30
67°
53°
31
66°
54°
1
66°
55°
2
67°
54°
3
67°
51°
4
65°
50°
5
65°
51°
6
67°
50°
7
66°
54°
8
69°
51°
9
68°
51°
10
68°
53°
11
64°
54°
12
65°
50°
13
67°
51°
14
67°
49°
15
64°
48°
16
63°
53°
17
66°
52°
18
67°
50°
19
65°
54°
20
66°
54°
21
67°
53°
22
65°
53°
23
64°
51°
24
65°
52°
25
63°
52°
26
62°
51°
27
63°
52°
28
64°
50°
29
64°
50°
30
63°
50°
1
Hist. Avg.
60°
47°
2
Hist. Avg.
60°
47°
3
Hist. Avg.
59°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grappenhall
Grappenhall's September 2026 forecast shows daily high temperatures ranging from 62° to 69°, with overnight lows between 48° and 55°. The average high for September is 65° with an average low of 52°. 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 Grappenhall. See also: October | November | December.
