Owosso, MI Weather & Growing Conditions
Today
87°F
Sunny
Sunny, with a high near 87. South southwest wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny | 8 mph SSW | 0% |
| Tonight | 61°F | Mostly Clear | 5 to 8 mph SSW | 0% |
| Wednesday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 9 mph SW | 28% |
| Wednesday Night | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 2 to 9 mph W | 80% |
| Thursday | 81°F | Showers And Thunderstorms | 2 to 6 mph WSW | 80% |
| Thursday Night | 61°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 1 to 6 mph SE | 38% |
| Friday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph SW | 18% |
| Friday Night | 62°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 2 to 6 mph WSW | 18% |
| Saturday | 88°F | Sunny | 3 to 12 mph SW | 4% |
| Saturday Night | 65°F | Mostly Clear then Chance Rain Showers | 5 to 10 mph SW | 28% |
| Sunday | 89°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 7 to 15 mph SW | 28% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms | 7 to 14 mph WSW | 51% |
| Monday | 86°F | Chance Rain Showers | 9 mph W | 51% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 5 to 9 mph WSW | 47% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Owosso, MI
Last spring frost
May 1
First fall frost
Oct 15
Growing season
164 days
Hardiness zone
6a
Explore more for Owosso, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Owosso Wwtp, Mi (0.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.