Ortonville, MI Weather & Growing Conditions
This Afternoon
66°F
Light Rain
Rain. Cloudy. High near 66, with temperatures falling to around 63 in the afternoon. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Light Rain | 15 mph S | 93% |
| Tonight | 49°F | Light Rain Likely then Mostly Cloudy | 9 to 14 mph SSW | 74% |
| Thursday | 57°F | Mostly Cloudy then Slight Chance Light Rain | 9 to 14 mph SW | 24% |
| Thursday Night | 39°F | Light Rain Likely | 9 mph W | 66% |
| Friday | 48°F | Light Rain Likely | 10 mph WNW | 57% |
| Friday Night | 33°F | Light Rain Likely | 12 mph NW | 57% |
| Saturday | 48°F | Slight Chance Light Rain then Partly Sunny | 8 to 12 mph NW | 19% |
| Saturday Night | 29°F | Partly Cloudy | 6 mph WNW | 2% |
| Sunday | 55°F | Sunny | 7 to 13 mph W | 3% |
| Sunday Night | 33°F | Mostly Clear | 6 to 10 mph W | 3% |
| Monday | 56°F | Mostly Sunny | 6 to 10 mph W | 1% |
| Monday Night | 39°F | Mostly Clear | 10 mph WSW | 1% |
| Tuesday | 59°F | Sunny | 10 mph W | 1% |
| Tuesday Night | 34°F | Partly Cloudy | 3 to 7 mph WNW | 1% |
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 Nov 4, 2026.