Union City, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Union City, a city in Randolph County, Indiana.
This Afternoon
73°F
Mostly Cloudy
Mostly cloudy, with a high near 73. Northeast wind around 8 mph.
7-day forecast for Union City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Mostly Cloudy | 8 mph NE | 1% |
| Tonight | 58°F | Partly Cloudy | 8 mph E | 4% |
| Saturday | 79°F | Showers And Thunderstorms | 7 mph SE | 77% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely | 7 mph S | 71% |
| Sunday | 81°F | Showers And Thunderstorms Likely | 6 to 9 mph W | 63% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 13 mph NE | 61% |
| Monday | 69°F | Showers And Thunderstorms Likely | 10 to 14 mph NE | 59% |
| Monday Night | 53°F | Chance Showers And Thunderstorms | 10 to 16 mph NE | 48% |
| Tuesday | 68°F | Chance Showers And Thunderstorms | 10 to 14 mph NE | 36% |
| Tuesday Night | 54°F | Slight Chance Rain Showers | 7 to 15 mph NE | 23% |
| Wednesday | 68°F | Slight Chance Rain Showers | 10 mph NE | 18% |
| Wednesday Night | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 6 to 10 mph N | 16% |
| Thursday | 69°F | Partly Sunny | 6 to 9 mph N | 9% |
| Thursday Night | 53°F | Mostly Cloudy | 5 to 9 mph N | 9% |
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 Sep 18, 2026.