S
M
T
W
T
F
S
30
88°
74°
31
88°
73°
1
87°
72°
2
90°
80°
3
88°
80°
4
88°
80°
5
90°
75°
6
83°
74°
7
84°
73°
8
83°
71°
9
87°
70°
10
86°
76°
11
88°
78°
12
88°
78°
13
88°
78°
14
88°
75°
15
82°
72°
16
81°
66°
17
79°
74°
18
86°
76°
19
82°
75°
20
83°
76°
21
83°
74°
22
78°
70°
23
77°
71°
24
76°
68°
25
77°
67°
26
76°
64°
27
77°
65°
28
76°
67°
29
75°
62°
30
77°
67°
1
74°
65°
2
78°
70°
3
77°
70°
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 74° to 86°, with overnight lows between 62° and 76°. The average high for September is 78° with an average low of 69°. 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.