Union City, MI Weather & Growing Conditions
Tonight
62°F
Partly Cloudy then Chance Rain Showers
A chance of rain showers after 5am. Partly cloudy, with a low around 62. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Partly Cloudy then Chance Rain Showers | 10 to 15 mph S | 35% |
| Wednesday | 69°F | Rain Showers | 10 to 15 mph S | 83% |
| Wednesday Night | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph SW | 21% |
| Thursday | 59°F | Slight Chance Rain Showers | 10 to 15 mph SW | 24% |
| Thursday Night | 44°F | Chance Rain Showers | 5 to 10 mph W | 35% |
| Friday | 54°F | Chance Rain Showers | 5 to 10 mph NW | 41% |
| Friday Night | 35°F | Slight Chance Rain Showers | 5 to 10 mph N | 24% |
| Saturday | 51°F | Partly Sunny | 5 to 10 mph NW | 9% |
| Saturday Night | 32°F | Partly Cloudy | 0 to 5 mph W | 5% |
| Sunday | 55°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 10 mph W | 20% |
| Sunday Night | 34°F | Slight Chance Rain Showers then Partly Cloudy | 5 to 10 mph W | 20% |
| Monday | 59°F | Mostly Sunny | 5 to 10 mph W | 14% |
| Monday Night | 38°F | Partly Cloudy | 5 to 10 mph SW | 6% |
| Tuesday | 61°F | Mostly Sunny | 5 to 10 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Union City, MI
Last spring frost
May 2
First fall frost
Oct 13
Growing season
163 days
Hardiness zone
6a
Explore more for Union City, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Coldwater St School, Mi (8.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.