S
M
T
W
T
F
S
30
70°
63°
31
78°
66°
1
88°
66°
2
87°
66°
3
78°
64°
4
77°
63°
5
76°
55°
6
74°
50°
7
77°
48°
8
80°
52°
9
78°
68°
10
72°
52°
11
74°
44°
12
82°
56°
13
73°
52°
14
67°
40°
15
69°
55°
16
69°
52°
17
69°
50°
18
68°
46°
19
65°
53°
20
67°
54°
21
61°
47°
22
64°
50°
23
66°
46°
24
66°
44°
25
66°
44°
26
68°
48°
27
70°
48°
28
68°
49°
29
69°
50°
30
67°
49°
1
68°
48°
2
70°
45°
3
60°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sandusky
Sandusky's September 2026 forecast shows daily high temperatures ranging from 60° to 70°, with overnight lows between 44° and 54°. The average high for September is 66° with an average low of 48°. 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 Sandusky. See also: October | November | December.