Unionville, IA Weather & Growing Conditions
Tonight
48°F
Chance Rain Showers then Mostly Cloudy
A chance of rain showers before 9pm. Mostly cloudy. Low around 48, with temperatures rising to around 50 overnight. Southwest wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Chance Rain Showers then Mostly Cloudy | 9 mph SW | 34% |
| Wednesday | 55°F | Mostly Cloudy | 10 to 14 mph WSW | 11% |
| Wednesday Night | 43°F | Mostly Cloudy | 8 mph WSW | 6% |
| Thursday | 54°F | Mostly Cloudy then Chance Rain Showers | 6 to 9 mph WNW | 28% |
| Thursday Night | 41°F | Chance Rain Showers then Mostly Cloudy | 5 mph NNW | 26% |
| Friday | 53°F | Partly Sunny | 2 to 6 mph N | 8% |
| Friday Night | 35°F | Mostly Cloudy | 1 mph N | 1% |
| Saturday | 56°F | Partly Sunny | 2 mph NW | 1% |
| Saturday Night | 37°F | Mostly Clear | 2 mph WNW | 3% |
| Sunday | 61°F | Sunny | 5 mph W | 7% |
| Sunday Night | 38°F | Mostly Clear | 3 mph WSW | 2% |
| Monday | 66°F | Sunny | 3 to 8 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 3 mph W | 0% |
| Tuesday | 65°F | Sunny | 3 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Unionville, IA
Last spring frost
Apr 18
First fall frost
Oct 23
Growing season
187 days
Hardiness zone
5b
Explore more for Unionville, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Rathbun Dam, Ia (12.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.