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
66°
57°
8
61°
54°
9
63°
50°
10
63°
48°
11
64°
54°
12
70°
52°
13
70°
59°
14
73°
61°
15
65°
55°
16
62°
56°
17
62°
55°
18
63°
58°
19
67°
55°
20
64°
57°
21
69°
55°
22
65°
54°
23
66°
56°
24
66°
55°
25
65°
53°
26
63°
55°
27
64°
53°
28
63°
53°
29
63°
52°
30
61°
52°
1
62°
51°
2
63°
52°
3
63°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Aintree Racecourse
Aintree Racecourse's September 2026 forecast shows daily high temperatures ranging from 61° to 69°, with overnight lows between 51° and 58°. The average high for September is 64° 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 Aintree Racecourse. See also: October | November | December.