Unionville, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Unionville, a city in Appanoose County, Iowa.
This Afternoon
70°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 5pm, then a slight chance of showers and thunderstorms. Mostly cloudy. High near 70, with temperatures falling to around 62 in the afternoon. South wind around 12 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Unionville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Showers And Thunderstorms Likely | 12 mph S | 58% |
| Tonight | 48°F | Mostly Cloudy | 7 to 10 mph SW | 13% |
| Wednesday | 54°F | Mostly Cloudy | 12 to 15 mph WSW | 11% |
| Wednesday Night | 43°F | Mostly Cloudy | 9 mph WSW | 6% |
| Thursday | 54°F | Mostly Cloudy then Chance Rain Showers | 6 to 10 mph WNW | 28% |
| Thursday Night | 41°F | Slight Chance Rain Showers then Mostly Cloudy | 6 mph NNW | 24% |
| Friday | 53°F | Partly Sunny | 3 to 7 mph N | 8% |
| Friday Night | 35°F | Mostly Cloudy | 2 mph N | 1% |
| Saturday | 56°F | Partly Sunny | 2 mph WNW | 1% |
| Saturday Night | 37°F | Mostly Clear | 0 to 3 mph W | 3% |
| Sunday | 61°F | Sunny | 5 mph W | 7% |
| Sunday Night | 39°F | Mostly Clear | 5 mph WSW | 2% |
| Monday | 66°F | Sunny | 5 to 8 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 5 mph W | 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 3, 2026.