Union City, MI Weather & Growing Conditions
Today
69°F
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a high near 69. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Showers And Thunderstorms | 5 to 10 mph SE | 93% |
| Tonight | 61°F | Showers And Thunderstorms | 5 mph SE | 90% |
| Sunday | 69°F | Showers And Thunderstorms Likely | 5 to 15 mph N | 67% |
| Sunday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 10 mph NE | 29% |
| Monday | 63°F | Mostly Cloudy | 10 to 15 mph NE | 13% |
| Monday Night | 46°F | Mostly Cloudy | 10 mph NE | 12% |
| Tuesday | 63°F | Partly Sunny | 10 to 15 mph NE | 11% |
| Tuesday Night | 48°F | Chance Rain Showers | 10 to 15 mph NE | 39% |
| Wednesday | 63°F | Chance Rain Showers | 10 mph NE | 47% |
| Wednesday Night | 49°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 40% |
| Thursday | 66°F | Partly Sunny | 5 to 10 mph NE | 7% |
| Thursday Night | 49°F | Mostly Cloudy | 5 to 10 mph NE | 7% |
| Friday | 70°F | Mostly Sunny | 5 to 10 mph NE | 3% |
| Friday Night | 48°F | Partly Cloudy | 5 mph NE | 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 Sep 19, 2026.