Sandusky, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sandusky, a city in Sanilac County, Michigan.
Tonight
50°F
Light Rain Likely
Rain likely. Mostly cloudy. Low around 50, with temperatures rising to around 53 overnight. East northeast wind 3 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Sandusky
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Light Rain Likely | 3 to 10 mph ENE | 64% |
| Saturday | 66°F | Chance Rain Showers | 3 to 9 mph SE | 52% |
| Saturday Night | 53°F | Rain Showers Likely | 5 to 9 mph E | 67% |
| Sunday | 66°F | Slight Chance Rain Showers | 6 to 15 mph NE | 24% |
| Sunday Night | 50°F | Mostly Cloudy | 9 to 15 mph NE | 10% |
| Monday | 62°F | Mostly Cloudy | 12 to 15 mph NE | 2% |
| Monday Night | 47°F | Mostly Cloudy | 9 to 15 mph NE | 5% |
| Tuesday | 62°F | Mostly Cloudy | 13 to 16 mph ENE | 10% |
| Tuesday Night | 48°F | Chance Rain Showers | 12 to 16 mph ENE | 41% |
| Wednesday | 63°F | Chance Rain Showers | 14 mph E | 45% |
| Wednesday Night | 49°F | Chance Showers And Thunderstorms | 6 to 13 mph E | 39% |
| Thursday | 65°F | Slight Chance Showers And Thunderstorms | 6 to 10 mph ENE | 20% |
| Thursday Night | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 3 to 9 mph NE | 15% |
| Friday | 68°F | Partly Sunny | 3 to 9 mph NNE | 8% |
Forecast source: National Weather Service (api.weather.gov) for Sandusky (43.420, -82.833). Updated through the day.
Growing snapshot for Sandusky
Last spring frost
May 2
First fall frost
Oct 16
Growing season
165 days
Hardiness zone
6a
More local growing data for Sandusky: nearby ZIP 48471 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Applegate
Brown City
Carsonville
Croswell
Deckerville
Forestville
Lexington
Marlette
Melvin
Minden City
Peck
Port Sanilac
Snover
Ubly
Climate data from the nearest NOAA station, Sandusky, Mi (1.7 mi from Sandusky). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.