Marine City, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marine City, a city in St. Clair County, Michigan.
Today
83°F
Sunny
Sunny, with a high near 83. South southwest wind 1 to 7 mph.
7-day forecast for Marine City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 1 to 7 mph SSW | 0% |
| Tonight | 59°F | Mostly Clear | 1 to 7 mph S | 0% |
| Wednesday | 87°F | Sunny | 0 to 7 mph SSW | 0% |
| Wednesday Night | 66°F | Partly Cloudy | 1 to 6 mph SSW | 13% |
| Thursday | 84°F | Chance Showers And Thunderstorms | 1 to 7 mph WSW | 52% |
| Thursday Night | 63°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 54% |
| Friday | 85°F | Chance Showers And Thunderstorms | 1 to 5 mph WSW | 48% |
| Friday Night | 64°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 3 mph SSW | 44% |
| Saturday | 87°F | Mostly Sunny | 1 to 9 mph SW | 11% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 2 to 8 mph SSW | 31% |
| Sunday | 89°F | Chance Rain Showers | 2 to 14 mph SW | 31% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 6 to 13 mph SW | 44% |
| Monday | 86°F | Chance Rain Showers | 6 to 9 mph W | 44% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 46% |
Forecast source: National Weather Service (api.weather.gov) for Marine City (42.714, -82.503). Updated through the day.
Growing snapshot for Marine City
Last spring frost
May 3
First fall frost
Oct 18
Growing season
167 days
Hardiness zone
6b
More local growing data for Marine City: nearby ZIP 48039 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Algonac Wwtp, Mi (5.3 mi from Marine City). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.