Marysville, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marysville, a city in St. Clair County, Michigan.
Tonight
55°F
Cloudy then Slight Chance Rain Showers
A slight chance of rain showers between 1am and 4am, then patchy fog and a slight chance of rain showers. Cloudy. Low around 55, with temperatures rising to around 57 overnight. East northeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Marysville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Cloudy then Slight Chance Rain Showers | 5 mph ENE | 20% |
| Sunday | 68°F | Rain Showers Likely then Mostly Cloudy | 5 to 15 mph NNE | 64% |
| Sunday Night | 50°F | Mostly Cloudy | 8 to 16 mph NE | 0% |
| Monday | 64°F | Partly Sunny | 12 mph NE | 0% |
| Monday Night | 48°F | Mostly Cloudy | 10 mph NE | 2% |
| Tuesday | 64°F | Partly Sunny | 10 to 14 mph ENE | 6% |
| Tuesday Night | 50°F | Chance Rain Showers | 10 to 14 mph ENE | 39% |
| Wednesday | 64°F | Chance Rain Showers | 13 mph E | 39% |
| Wednesday Night | 50°F | Chance Rain Showers | 7 to 12 mph E | 33% |
| Thursday | 66°F | Chance Rain Showers | 9 mph E | 26% |
| Thursday Night | 49°F | Partly Cloudy | 3 to 7 mph ENE | 13% |
| Friday | 68°F | Mostly Sunny | 3 to 8 mph NE | 12% |
| Friday Night | 50°F | Partly Cloudy | 2 to 7 mph NNE | 6% |
| Saturday | 70°F | Mostly Sunny | 2 to 8 mph NNE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Marysville (42.908, -82.481). Updated through the day.
Growing snapshot for Marysville
Last spring frost
Apr 19
First fall frost
Nov 3
Growing season
196 days
Hardiness zone
6a
More local growing data for Marysville: nearby ZIP 48040 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Port Huron, Mi (5.4 mi from Marysville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.