Unionville, MI Weather & Growing Conditions
Tonight
59°F
Mostly Cloudy
Mostly cloudy, with a low around 59. South wind around 10 mph, with gusts as high as 23 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Mostly Cloudy | 10 mph S | 3% |
| Wednesday | 71°F | Light Rain | 10 to 17 mph S | 86% |
| Wednesday Night | 49°F | Light Rain then Mostly Cloudy | 8 to 15 mph SSW | 75% |
| Thursday | 60°F | Mostly Cloudy then Chance Light Rain | 10 to 17 mph SW | 33% |
| Thursday Night | 42°F | Light Rain Likely | 3 to 10 mph W | 56% |
| Friday | 53°F | Light Rain Likely | 5 to 15 mph NNW | 60% |
| Friday Night | 35°F | Chance Light Rain | 8 to 13 mph N | 49% |
| Saturday | 52°F | Chance Light Rain then Partly Sunny | 7 to 10 mph NW | 26% |
| Saturday Night | 30°F | Partly Cloudy | 5 mph W | 5% |
| Sunday | 56°F | Mostly Sunny then Slight Chance Light Rain | 5 to 13 mph W | 16% |
| Sunday Night | 32°F | Slight Chance Light Rain then Partly Cloudy | 6 to 10 mph WNW | 16% |
| Monday | 56°F | Mostly Sunny | 7 to 15 mph W | 10% |
| Monday Night | 36°F | Partly Cloudy | 8 to 12 mph WSW | 10% |
| Tuesday | 58°F | Mostly Sunny | 9 to 15 mph W | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Unionville, MI
Last spring frost
May 7
First fall frost
Oct 9
Growing season
154 days
Hardiness zone
6a
Explore more for Unionville, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Caro Wwtp, Mi (12.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.