Unionville, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Unionville, a city in Appanoose County, Iowa.
Overnight
47°F
Slight Chance Rain Showers
A slight chance of rain showers after 5am. Cloudy, with a low around 47. West wind around 13 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
7-day forecast for Unionville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Slight Chance Rain Showers | 13 mph W | 15% |
| Wednesday | 53°F | Slight Chance Rain Showers then Cloudy | 12 to 15 mph WSW | 19% |
| Wednesday Night | 44°F | Mostly Cloudy then Slight Chance Rain Showers | 9 mph WSW | 15% |
| Thursday | 55°F | Chance Rain Showers | 6 to 10 mph WNW | 40% |
| Thursday Night | 41°F | Slight Chance Rain Showers then Mostly Cloudy | 6 mph NNW | 18% |
| Friday | 51°F | Partly Sunny | 2 to 7 mph N | 3% |
| Friday Night | 31°F | Partly Cloudy | 1 mph N | 0% |
| Saturday | 53°F | Mostly Sunny | 2 mph W | 0% |
| Saturday Night | 35°F | Mostly Clear | 2 mph WSW | 1% |
| Sunday | 59°F | Sunny | 3 mph W | 1% |
| Sunday Night | 37°F | Clear | 2 mph SW | 0% |
| Monday | 65°F | Sunny | 2 to 7 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 3 mph W | 0% |
| Tuesday | 65°F | Sunny | 2 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Unionville (40.818, -92.696). Updated through the day.
Growing snapshot for Unionville
Last spring frost
Apr 18
First fall frost
Oct 23
Growing season
187 days
Hardiness zone
5b
More local growing data for Unionville: nearby ZIP 52594 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Rathbun Dam, Ia (12.6 mi from Unionville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.