Owosso, MI Weather & Growing Conditions
Today
70°F
Light Rain
Rain. Mostly cloudy. High near 70, with temperatures falling to around 67 in the afternoon. South wind around 16 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Light Rain | 16 mph S | 93% |
| Tonight | 49°F | Chance Light Rain then Mostly Cloudy | 8 to 13 mph SSW | 27% |
| Thursday | 58°F | Mostly Cloudy then Chance Light Rain | 10 to 15 mph SW | 26% |
| Thursday Night | 41°F | Light Rain Likely | 5 to 8 mph W | 58% |
| Friday | 50°F | Light Rain Likely | 5 to 10 mph NW | 58% |
| Friday Night | 33°F | Light Rain Likely | 9 mph NNW | 58% |
| Saturday | 50°F | Partly Sunny | 9 mph NW | 7% |
| Saturday Night | 30°F | Partly Cloudy | 6 mph W | 1% |
| Sunday | 55°F | Mostly Sunny | 7 to 14 mph W | 6% |
| Sunday Night | 32°F | Mostly Clear | 5 to 10 mph W | 6% |
| Monday | 58°F | Mostly Sunny | 6 to 10 mph WSW | 1% |
| Monday Night | 38°F | Partly Cloudy | 9 mph WSW | 5% |
| Tuesday | 60°F | Mostly Sunny then Slight Chance Light Rain | 8 to 13 mph W | 15% |
| Tuesday Night | 34°F | Slight Chance Light Rain then Partly Cloudy | 2 to 8 mph WNW | 15% |
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 Nov 4, 2026.