S
M
T
W
T
F
S
30
83°
54°
31
78°
67°
1
90°
68°
2
75°
66°
3
85°
67°
4
83°
67°
5
79°
59°
6
78°
56°
7
77°
54°
8
82°
60°
9
87°
70°
10
78°
63°
11
81°
55°
12
78°
65°
13
80°
63°
14
81°
62°
15
80°
64°
16
77°
59°
17
77°
59°
18
72°
55°
19
74°
53°
20
73°
55°
21
72°
54°
22
71°
58°
23
71°
58°
24
70°
57°
25
71°
57°
26
76°
56°
27
74°
54°
28
74°
56°
29
75°
57°
30
76°
56°
1
75°
56°
2
74°
55°
3
73°
53°
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 70° to 87°, with overnight lows between 53° and 70°. The average high for September is 76° with an average low of 58°. 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.