Marysville, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marysville, a city in St. Clair County, Michigan.
Today
68°F
Chance Rain Showers
A chance of rain showers between 9am and 5pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 68, with temperatures falling to around 65 in the afternoon. East southeast wind 5 to 8 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Marysville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Chance Rain Showers | 5 to 8 mph ESE | 46% |
| Tonight | 56°F | Showers And Thunderstorms | 5 to 8 mph ESE | 79% |
| Sunday | 68°F | Rain Showers Likely | 5 to 14 mph NE | 64% |
| Sunday Night | 50°F | Partly Cloudy | 9 to 15 mph NE | 1% |
| Monday | 64°F | Partly Sunny | 12 mph NE | 0% |
| Monday Night | 47°F | Mostly Cloudy | 10 mph NE | 2% |
| Tuesday | 65°F | Partly Sunny | 14 mph ENE | 7% |
| Tuesday Night | 48°F | Chance Rain Showers | 10 to 14 mph ENE | 38% |
| Wednesday | 64°F | Chance Rain Showers | 14 mph E | 43% |
| Wednesday Night | 49°F | Chance Rain Showers | 6 to 12 mph E | 37% |
| Thursday | 66°F | Slight Chance Rain Showers | 9 mph ENE | 24% |
| Thursday Night | 49°F | Mostly Cloudy | 3 to 7 mph NE | 13% |
| Friday | 68°F | Mostly Sunny | 5 to 9 mph NE | 9% |
| Friday Night | 49°F | Partly Cloudy | 3 to 8 mph NE | 7% |
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 19, 2026.