Stoneboro, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Stoneboro, a borough in Mercer County, Pennsylvania.
Today
83°F
Sunny
Sunny, with a high near 83. Southeast wind around 3 mph.
7-day forecast for Stoneboro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 3 mph SE | 0% |
| Tonight | 63°F | Mostly Clear | 5 mph SE | 0% |
| Wednesday | 85°F | Mostly Sunny then Scattered Showers And Thunderstorms | 6 mph S | 40% |
| Wednesday Night | 66°F | Scattered Showers And Thunderstorms | 5 mph S | 50% |
| Thursday | 84°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 54% |
| Thursday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph SW | 55% |
| Friday | 82°F | Showers And Thunderstorms | 7 mph SW | 82% |
| Friday Night | 65°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph SW | 82% |
| Saturday | 83°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 5 to 8 mph SW | 42% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 42% |
| Sunday | 85°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 9 mph SW | 22% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 8 mph SW | 34% |
| Monday | 85°F | Chance Rain Showers | 7 to 12 mph W | 45% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 5 to 9 mph SW | 51% |
Forecast source: National Weather Service (api.weather.gov) for Stoneboro (41.330, -80.118). Updated through the day.
Growing snapshot for Stoneboro
Last spring frost
May 15
First fall frost
Oct 3
Growing season
140 days
Hardiness zone
6a
More local growing data for Stoneboro: nearby ZIP 16153 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Clark
Farrell
Fredonia
Greenville
Grove City
Hermitage
Jackson Center
Lake Latonka
Mercer
New Lebanon
Reynolds Heights
Sandy Lake
Sharon
Sharpsville
Sheakleyville
West Middlesex
Wheatland
Climate data from the nearest NOAA station, Mercer, Pa (10.2 mi from Stoneboro). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.