S
M
T
W
T
F
S
30
76°
61°
31
76°
61°
1
78°
59°
2
71°
56°
3
70°
55°
4
70°
57°
5
73°
57°
6
76°
60°
7
78°
60°
8
78°
59°
9
77°
60°
10
78°
59°
11
75°
59°
12
77°
58°
13
78°
59°
14
75°
49°
15
66°
49°
16
68°
53°
17
70°
51°
18
66°
47°
19
67°
48°
20
67°
50°
21
74°
53°
22
74°
54°
23
73°
45°
24
67°
45°
25
68°
49°
26
72°
53°
27
72°
52°
28
70°
44°
29
65°
41°
30
62°
44°
1
62°
50°
2
69°
46°
3
70°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Conneaut Lake
Conneaut Lake's September 2026 forecast shows daily high temperatures ranging from 62° to 78°, with overnight lows between 41° and 61°. The average high for September is 72° with an average low of 53°. 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 Conneaut Lake. See also: October | November | December.
