S
M
T
W
T
F
S
30
68°
47°
31
68°
44°
1
69°
47°
2
70°
51°
3
71°
49°
4
72°
52°
5
67°
54°
6
75°
51°
7
76°
49°
8
69°
43°
9
66°
43°
10
67°
45°
11
70°
48°
12
72°
49°
13
68°
43°
14
71°
47°
15
73°
48°
16
70°
49°
17
71°
50°
18
68°
49°
19
70°
48°
20
71°
46°
21
69°
46°
22
71°
41°
23
63°
44°
24
59°
44°
25
59°
40°
26
60°
37°
27
59°
37°
28
58°
39°
29
59°
39°
30
57°
37°
1
57°
36°
2
56°
35°
3
56°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wirral
Wirral's September 2026 forecast shows daily high temperatures ranging from 56° to 76°, with overnight lows between 35° and 54°. The average high for September is 66° with an average low of 45°. 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 Wirral. See also: October | November | December.