Unionville, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Unionville, a community in Beaver County, Pennsylvania.
Today
77°F
Mostly Cloudy
Mostly cloudy, with a high near 77. East wind around 6 mph.
7-day forecast for Unionville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Mostly Cloudy | 6 mph E | 4% |
| Tonight | 63°F | Showers And Thunderstorms | 5 mph SE | 76% |
| Sunday | 76°F | Showers And Thunderstorms | 8 mph SW | 96% |
| Sunday Night | 53°F | Showers And Thunderstorms Likely | 9 mph N | 71% |
| Monday | 67°F | Chance Rain Showers | 10 mph NE | 32% |
| Monday Night | 52°F | Rain Showers Likely | 9 to 13 mph NE | 58% |
| Tuesday | 62°F | Rain Showers Likely | 14 mph E | 58% |
| Tuesday Night | 50°F | Rain Showers Likely | 16 mph E | 60% |
| Wednesday | 62°F | Rain Showers Likely | 13 to 16 mph E | 60% |
| Wednesday Night | 50°F | Showers And Thunderstorms Likely | 14 mph E | 63% |
| Thursday | 65°F | Rain Showers Likely | 8 to 12 mph E | 59% |
| Thursday Night | 49°F | Slight Chance Rain Showers | 5 to 8 mph E | 23% |
| Friday | 68°F | Slight Chance Rain Showers | 7 mph NE | 17% |
| Friday Night | 49°F | Slight Chance Rain Showers then Partly Cloudy | 7 mph NE | 17% |
Forecast source: National Weather Service (api.weather.gov) for Unionville (40.746, -80.211). Updated through the day.
Growing snapshot for Unionville
Last spring frost
Apr 27
First fall frost
Oct 25
Growing season
178 days
Hardiness zone
6b
More local growing data for Unionville: nearby ZIP 15074 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Aliquippa
Ambridge
Ambridge Heights
Baden
Beaver
Beaver Falls
Big Beaver
Bridgewater
Conway
Darlington
East Rochester
Eastvale
Economy
Fallston
Frankfort Springs
Freedom
Georgetown
Glasgow
Hazen
Homewood
Hookstown
Industry
Koppel
Midland
Monaca
New Brighton
Ohioville
Patterson Heights
Pine Run
Rochester
Climate data from the nearest NOAA station, Beaver Falls 1 Ne, Pa (5.9 mi from Unionville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.