S
M
T
W
T
F
S
30
68°
56°
31
65°
57°
1
69°
58°
2
69°
61°
3
68°
60°
4
66°
55°
5
65°
54°
6
63°
55°
7
65°
56°
8
66°
56°
9
65°
53°
10
63°
55°
11
62°
53°
12
64°
52°
13
62°
50°
14
64°
53°
15
63°
54°
16
61°
52°
17
63°
55°
18
64°
54°
19
64°
53°
20
62°
52°
21
62°
54°
22
64°
53°
23
64°
52°
24
60°
50°
25
61°
50°
26
62°
51°
27
63°
52°
28
63°
51°
29
62°
53°
30
63°
53°
1
63°
52°
2
62°
52°
3
62°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Aintree
Aintree's September 2026 forecast shows daily high temperatures ranging from 60° to 69°, with overnight lows between 50° and 61°. 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. See also: October | November | December.
