Ortonville, MI Weather & Growing Conditions
Overnight
53°F
Mostly Cloudy
Mostly cloudy. Low around 53, with temperatures rising to around 55 overnight. East northeast wind around 6 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Mostly Cloudy | 6 mph ENE | 20% |
| Saturday | 63°F | Rain Showers | 5 to 8 mph ESE | 74% |
| Saturday Night | 56°F | Showers And Thunderstorms | 5 to 8 mph ESE | 84% |
| Sunday | 66°F | Rain Showers Likely | 6 to 12 mph NE | 63% |
| Sunday Night | 50°F | Partly Cloudy | 7 to 12 mph NE | 1% |
| Monday | 60°F | Mostly Cloudy | 12 mph NE | 1% |
| Monday Night | 47°F | Mostly Cloudy | 8 to 12 mph NE | 3% |
| Tuesday | 61°F | Partly Sunny | 10 to 14 mph NE | 6% |
| Tuesday Night | 49°F | Chance Rain Showers | 14 mph ENE | 41% |
| Wednesday | 61°F | Chance Rain Showers | 14 mph ENE | 46% |
| Wednesday Night | 50°F | Chance Rain Showers | 7 to 12 mph ENE | 43% |
| Thursday | 64°F | Slight Chance Rain Showers | 9 mph ENE | 19% |
| Thursday Night | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 3 to 8 mph NE | 15% |
| Friday | 68°F | Mostly Sunny | 5 to 8 mph NE | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Ortonville, MI
Last spring frost
May 1
First fall frost
Oct 14
Growing season
164 days
Hardiness zone
6a
Explore more for Ortonville, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Goodrich, Mi (6.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.