S
M
T
W
T
F
S
30
92°
69°
31
91°
69°
1
91°
68°
2
90°
69°
3
92°
69°
4
92°
68°
5
91°
69°
6
91°
66°
7
88°
62°
8
85°
64°
9
86°
67°
10
89°
62°
11
88°
63°
12
88°
64°
13
85°
65°
14
88°
66°
15
89°
65°
16
88°
61°
17
84°
60°
18
81°
59°
19
80°
64°
20
81°
58°
21
80°
57°
22
79°
58°
23
79°
62°
24
80°
62°
25
81°
63°
26
85°
62°
27
84°
62°
28
84°
61°
29
83°
62°
30
79°
61°
1
78°
60°
2
82°
54°
3
77°
53°
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 77° to 92°, with overnight lows between 53° and 69°. The average high for September is 85° with an average low of 63°. 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.