Click on a day for an hourly weather forecast
The temperatures in Sandusky in September are comfortable with low of 15°C and and high up to 22°C.
You can expect about 3 to 8 days of rain in Sandusky during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Sandusky in September 2025.
If you’re planning to visit Sandusky in the near future, we highly recommend that you review the 14 day weather forecast for Sandusky before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -1° / -7° | 7 | 7 | 17 | 92 mm | Awful | Sandusky in January |
| February | 0° / -6° | 6 | 6 | 16 | 97 mm | Awful | Sandusky in February |
| March | 6° / 0° | 9 | 13 | 9 | 116 mm | Awful | Sandusky in March |
| April | 12° / 5° | 11 | 16 | 3 | 156 mm | Awful | Sandusky in April |
| May | 19° / 11° | 10 | 20 | 0 | 190 mm | Ok | Sandusky in May |
| June | 23° / 16° | 10 | 20 | 0 | 227 mm | Good | Sandusky in June |
| July | 26° / 18° | 10 | 21 | 0 | 191 mm | Good | Sandusky in July |
| August | 25° / 18° | 7 | 24 | 0 | 167 mm | Good | Sandusky in August |
| September | 22° / 15° | 7 | 23 | 0 | 133 mm | Ok | Sandusky in September |
| October | 16° / 9° | 8 | 23 | 0 | 136 mm | Ok | Sandusky in October |
| November | 8° / 3° | 7 | 17 | 6 | 101 mm | Awful | Sandusky in November |
| December | 3° / -2° | 7 | 11 | 13 | 95 mm | Awful | Sandusky in December |