Stoystown, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Stoystown, a borough in Somerset County, Pennsylvania.
This Afternoon
72°F
Slight Chance Rain Showers
A slight chance of rain showers before 4pm. Mostly cloudy, with a high near 72. North wind around 7 mph. Chance of precipitation is 20%.
7-day forecast for Stoystown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Slight Chance Rain Showers | 7 mph N | 22% |
| Tonight | 53°F | Patchy Fog | 1 to 6 mph NE | 5% |
| Saturday | 70°F | Partly Sunny | 3 to 8 mph SE | 3% |
| Saturday Night | 59°F | Mostly Cloudy then Chance Rain Showers | 7 to 10 mph SE | 45% |
| Sunday | 73°F | Rain Showers | 8 mph SW | 95% |
| Sunday Night | 57°F | Showers And Thunderstorms | 5 mph N | 95% |
| Monday | 64°F | Chance Rain Showers | 5 to 8 mph E | 48% |
| Monday Night | 52°F | Rain Showers Likely | 8 to 14 mph E | 74% |
| Tuesday | 58°F | Showers And Thunderstorms | 14 mph SE | 77% |
| Tuesday Night | 48°F | Showers And Thunderstorms Likely | 14 to 18 mph E | 73% |
| Wednesday | 55°F | Showers And Thunderstorms Likely | 13 to 16 mph SE | 67% |
| Wednesday Night | 48°F | Showers And Thunderstorms Likely | 12 to 16 mph SE | 57% |
| Thursday | 59°F | Chance Showers And Thunderstorms | 10 mph E | 51% |
| Thursday Night | 48°F | Chance Rain Showers | 3 to 7 mph E | 33% |
Forecast source: National Weather Service (api.weather.gov) for Stoystown (40.103, -78.955). Updated through the day.
Growing snapshot for Stoystown
Last spring frost
May 6
First fall frost
Oct 12
Growing season
159 days
Hardiness zone
6a
More local growing data for Stoystown: nearby ZIP 15563 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Laurel Summit, Pa (12.1 mi from Stoystown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.