S
M
T
W
T
F
S
30
82°
62°
31
79°
63°
1
79°
63°
2
82°
59°
3
82°
53°
4
74°
54°
5
74°
61°
6
78°
59°
7
80°
54°
8
73°
55°
9
72°
57°
10
73°
60°
11
76°
59°
12
81°
60°
13
80°
59°
14
81°
57°
15
79°
53°
16
71°
56°
17
71°
50°
18
72°
50°
19
70°
47°
20
68°
46°
21
67°
48°
22
68°
55°
23
69°
48°
24
71°
52°
25
73°
55°
26
72°
54°
27
75°
55°
28
76°
52°
29
75°
50°
30
69°
50°
1
68°
52°
2
73°
52°
3
66°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Liverpool
Liverpool's September 2026 forecast shows daily high temperatures ranging from 66° to 82°, with overnight lows between 43° and 63°. The average high for September is 74° with an average low of 54°. 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 Liverpool. See also: October | November | December.