Union City, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Union City, a city in Randolph County, Indiana.
Tonight
47°F
Slight Chance Light Rain then Cloudy
A slight chance of rain before 7pm. Cloudy, with a low around 47. Southwest wind 7 to 12 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Union City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Slight Chance Light Rain then Cloudy | 7 to 12 mph SW | 18% |
| Thursday | 61°F | Mostly Cloudy | 9 to 15 mph SW | 1% |
| Thursday Night | 43°F | Slight Chance Light Rain | 6 to 9 mph W | 24% |
| Friday | 54°F | Slight Chance Light Rain | 7 to 13 mph NW | 20% |
| Friday Night | 34°F | Mostly Cloudy | 7 to 12 mph NW | 12% |
| Saturday | 52°F | Partly Sunny | 7 to 10 mph NW | 1% |
| Saturday Night | 30°F | Partly Cloudy | 3 to 7 mph NW | 1% |
| Sunday | 55°F | Sunny | 3 to 12 mph W | 1% |
| Sunday Night | 33°F | Mostly Clear | 5 to 8 mph W | 1% |
| Monday | 60°F | Sunny | 5 to 9 mph W | 0% |
| Monday Night | 38°F | Clear | 9 mph SW | 0% |
| Tuesday | 62°F | Sunny | 10 mph W | 1% |
| Tuesday Night | 36°F | Mostly Clear | 2 to 6 mph NW | 3% |
| Veterans Day | 60°F | Mostly Sunny | 2 to 7 mph NW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Union City (40.199, -84.821). Updated through the day.
Growing snapshot for Union City
Last spring frost
Apr 20
First fall frost
Oct 21
Growing season
183 days
Hardiness zone
6a
More local growing data for Union City: nearby ZIP 47390 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Blountsville
Farmland
Losantville
Lynn
Modoc
Parker City
Ridgeville
Saratoga
Spartanburg
Winchester
Windsor
Climate data from the nearest NOAA station, Winchester Airport 3 E, In (4.6 mi from Union City). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.