S
M
T
W
T
F
S
30
84°
61°
31
77°
61°
1
68°
60°
2
77°
60°
3
74°
62°
4
82°
63°
5
73°
60°
6
68°
53°
7
81°
53°
8
81°
60°
9
77°
61°
10
84°
68°
11
78°
50°
12
78°
50°
13
71°
57°
14
71°
54°
15
68°
41°
16
78°
49°
17
81°
63°
18
77°
59°
19
65°
45°
20
63°
57°
21
66°
51°
22
61°
49°
23
63°
50°
24
64°
52°
25
63°
50°
26
66°
49°
27
69°
49°
28
68°
48°
29
68°
51°
30
69°
50°
1
67°
49°
2
68°
46°
3
65°
51°
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 61° to 69°, with overnight lows between 45° and 57°. The average high for September is 66° with an average low of 50°. 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.