S
M
T
W
T
F
S
30
66°
57°
31
64°
54°
1
68°
52°
2
66°
57°
3
70°
59°
4
64°
57°
5
64°
55°
6
73°
55°
7
67°
57°
8
62°
55°
9
62°
52°
10
66°
57°
11
64°
52°
12
65°
61°
13
65°
55°
14
69°
57°
15
65°
54°
16
63°
55°
17
65°
56°
18
65°
53°
19
66°
54°
20
64°
55°
21
65°
55°
22
65°
54°
23
64°
54°
24
66°
52°
25
62°
49°
26
61°
48°
27
63°
47°
28
63°
49°
29
62°
52°
30
62°
50°
1
61°
49°
2
63°
50°
3
63°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bootle
Bootle's September 2026 forecast shows daily high temperatures ranging from 61° to 69°, with overnight lows between 47° and 61°. The average high for September is 64° with an average low of 53°. 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 Bootle. See also: October | November | December.