Stoneboro, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Stoneboro, a borough in Mercer County, Pennsylvania.
This Afternoon
69°F
Chance Rain Showers
A chance of rain showers after 4pm. Partly sunny, with a high near 69. Southeast wind around 6 mph. Chance of precipitation is 30%.
7-day forecast for Stoneboro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Chance Rain Showers | 6 mph SE | 26% |
| Tonight | 61°F | Rain Showers Likely | 7 mph SE | 69% |
| Sunday | 72°F | Showers And Thunderstorms | 9 mph W | 94% |
| Sunday Night | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 9 mph NE | 18% |
| Monday | 67°F | Mostly Cloudy | 12 mph NE | 9% |
| Monday Night | 50°F | Chance Rain Showers | 9 to 14 mph NE | 28% |
| Tuesday | 63°F | Chance Rain Showers | 15 mph E | 41% |
| Tuesday Night | 50°F | Rain Showers Likely | 17 mph E | 63% |
| Wednesday | 61°F | Rain Showers Likely | 17 mph E | 63% |
| Wednesday Night | 49°F | Chance Rain Showers | 16 mph E | 48% |
| Thursday | 64°F | Chance Rain Showers | 9 to 14 mph E | 48% |
| Thursday Night | 48°F | Slight Chance Rain Showers then Mostly Cloudy | 8 mph E | 16% |
| Friday | 68°F | Partly Sunny | 8 mph NE | 12% |
| Friday Night | 48°F | Partly Cloudy | 5 to 8 mph NE | 11% |
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 Sep 19, 2026.