Unionville, PA Weather & Growing Conditions
Overnight
57°F
Partly Cloudy
Partly cloudy, with a low around 57. Northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Partly Cloudy | 5 mph NE | 0% |
| Saturday | 73°F | Mostly Sunny | 5 mph NE | 2% |
| Saturday Night | 61°F | Patchy Fog | 5 mph SE | 23% |
| Sunday | 76°F | Showers And Thunderstorms | 5 to 10 mph S | 81% |
| Sunday Night | 61°F | Showers And Thunderstorms | 5 to 10 mph NW | 83% |
| Monday | 69°F | Chance Rain Showers | 10 mph NE | 40% |
| Monday Night | 55°F | Chance Rain Showers | 5 to 10 mph NE | 33% |
| Tuesday | 62°F | Chance Rain Showers | 10 mph NE | 40% |
| Tuesday Night | 51°F | Chance Rain Showers | 10 to 15 mph NE | 40% |
| Wednesday | 60°F | Chance Rain Showers | 10 to 15 mph NE | 39% |
| Wednesday Night | 51°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 39% |
| Thursday | 62°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 37% |
| Thursday Night | 51°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 33% |
| Friday | 66°F | Chance Rain Showers | 10 mph N | 28% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Unionville, PA
Last spring frost
Apr 19
First fall frost
Oct 26
Growing season
189 days
Hardiness zone
7a
Explore more for Unionville, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Avondale 2 N, Pa (3.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.