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.
This Afternoon
71°F
Mostly Cloudy
Mostly cloudy. High near 71, with temperatures falling to around 68 in the afternoon. North northeast wind around 12 mph, with gusts as high as 20 mph.
7-day forecast for Marine City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Mostly Cloudy | 12 mph NNE | 1% |
| Tonight | 53°F | Mostly Cloudy | 3 to 12 mph NE | 6% |
| Saturday | 69°F | Rain Showers Likely | 3 to 8 mph ESE | 67% |
| Saturday Night | 54°F | Showers And Thunderstorms | 3 to 8 mph E | 78% |
| Sunday | 67°F | Chance Rain Showers | 5 to 14 mph NNE | 44% |
| Sunday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 7 to 14 mph NE | 28% |
| Monday | 66°F | Mostly Cloudy | 8 to 13 mph NE | 6% |
| Monday Night | 48°F | Cloudy | 12 mph NE | 11% |
| Tuesday | 65°F | Mostly Cloudy then Slight Chance Rain Showers | 14 mph NE | 18% |
| Tuesday Night | 50°F | Chance Rain Showers | 10 to 14 mph ENE | 48% |
| Wednesday | 64°F | Chance Rain Showers | 13 mph ENE | 52% |
| Wednesday Night | 51°F | Chance Showers And Thunderstorms | 6 to 10 mph ENE | 52% |
| Thursday | 66°F | Slight Chance Showers And Thunderstorms | 6 to 9 mph NE | 23% |
| Thursday Night | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 3 to 8 mph NNE | 15% |
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 Sep 18, 2026.