S
M
T
W
T
F
S
30
73°
56°
31
75°
54°
1
77°
61°
2
75°
60°
3
80°
62°
4
76°
58°
5
72°
57°
6
74°
55°
7
77°
57°
8
74°
58°
9
70°
59°
10
74°
49°
11
67°
45°
12
78°
46°
13
79°
51°
14
65°
44°
15
66°
60°
16
74°
54°
17
69°
52°
18
70°
48°
19
66°
51°
20
65°
49°
21
64°
48°
22
65°
50°
23
65°
51°
24
69°
50°
25
70°
50°
26
68°
51°
27
66°
49°
28
68°
49°
29
61°
44°
30
61°
45°
1
64°
49°
2
65°
47°
3
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Aylmer
Aylmer's September 2026 forecast shows daily high temperatures ranging from 61° to 79°, with overnight lows between 44° and 60°. The average high for September is 67° with an average low of 49°. 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 Aylmer. See also: October | November | December.
