S
M
T
W
T
F
S
30
67°
51°
31
69°
51°
1
76°
51°
2
81°
47°
3
83°
47°
4
85°
46°
5
86°
48°
6
87°
51°
7
83°
54°
8
85°
50°
9
84°
46°
10
85°
39°
11
81°
41°
12
84°
45°
13
84°
48°
14
77°
56°
15
73°
54°
16
71°
52°
17
62°
48°
18
67°
45°
19
67°
41°
20
64°
40°
21
68°
41°
22
62°
40°
23
61°
38°
24
64°
37°
25
63°
38°
26
64°
39°
27
64°
39°
28
62°
37°
29
63°
38°
30
60°
29°
1
60°
31°
2
52°
31°
3
53°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Avon
Avon's September 2026 forecast shows daily high temperatures ranging from 52° to 68°, with overnight lows between 29° and 48°. The average high for September is 62° with an average low of 38°. 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 Avon. See also: October | November | December.