S
M
T
W
T
F
S
30
75°
58°
31
75°
58°
1
76°
59°
2
77°
59°
3
76°
58°
4
77°
58°
5
77°
57°
6
76°
58°
7
74°
55°
8
75°
54°
9
73°
61°
10
74°
55°
11
73°
54°
12
73°
54°
13
74°
61°
14
77°
57°
15
78°
59°
16
79°
61°
17
80°
61°
18
81°
60°
19
80°
52°
20
77°
52°
21
69°
56°
22
70°
58°
23
74°
58°
24
76°
59°
25
77°
51°
26
74°
48°
27
72°
50°
28
67°
49°
29
67°
49°
30
66°
50°
1
66°
55°
2
Hist. Avg.
69°
51°
3
Hist. Avg.
69°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Avon Lake
Avon Lake's September 2026 forecast shows daily high temperatures ranging from 66° to 81°, with overnight lows between 48° and 61°. The average high for September is 74° with an average low of 56°. 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 Lake. See also: October | November | December.