S
M
T
W
T
F
S
30
82°
57°
31
85°
55°
1
78°
56°
2
77°
61°
3
79°
61°
4
78°
56°
5
80°
55°
6
79°
60°
7
78°
54°
8
79°
55°
9
78°
59°
10
76°
59°
11
79°
53°
12
76°
52°
13
75°
52°
14
76°
53°
15
78°
57°
16
80°
57°
17
80°
56°
18
75°
50°
19
74°
55°
20
74°
55°
21
73°
50°
22
73°
52°
23
78°
55°
24
77°
54°
25
78°
55°
26
77°
48°
27
75°
47°
28
71°
48°
29
71°
48°
30
69°
46°
1
Hist. Avg.
72°
49°
2
Hist. Avg.
72°
48°
3
Hist. Avg.
72°
48°
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 69° to 85°, with overnight lows between 46° and 61°. The average high for September is 77° with an average low of 54°. 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.