Unionville, PA Weather & Growing Conditions
This Afternoon
72°F
Mostly Sunny
Mostly sunny, with a high near 72. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Mostly Sunny | 5 mph S | 1% |
| Tonight | 57°F | Mostly Cloudy | 5 mph S | 3% |
| Thursday | 70°F | Light Rain Likely | 5 to 10 mph S | 60% |
| Thursday Night | 59°F | Light Rain | 0 to 5 mph SW | 82% |
| Friday | 68°F | Light Rain | 0 to 5 mph N | 82% |
| Friday Night | 48°F | Light Rain Likely | 0 to 5 mph NW | 61% |
| Saturday | 61°F | Mostly Sunny | 5 to 10 mph NW | 7% |
| Saturday Night | 39°F | Partly Cloudy | 5 to 10 mph W | 7% |
| Sunday | 58°F | Mostly Sunny | 5 to 10 mph NW | 6% |
| Sunday Night | 37°F | Mostly Clear | 5 to 10 mph W | 6% |
| Monday | 57°F | Sunny | 10 mph W | 6% |
| Monday Night | 36°F | Mostly Clear | 5 mph W | 4% |
| Tuesday | 61°F | Sunny | 5 to 10 mph W | 3% |
| Tuesday Night | 38°F | Mostly Clear | 5 mph W | 0% |
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 Nov 4, 2026.