Youngstown, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Youngstown, a borough in Westmoreland County, Pennsylvania.
Today
86°F
Sunny
Sunny, with a high near 86. Southeast wind around 5 mph.
7-day forecast for Youngstown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 5 mph SE | 0% |
| Tonight | 67°F | Partly Cloudy | 2 to 7 mph SE | 1% |
| Wednesday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph SE | 28% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms | 5 mph S | 34% |
| Thursday | 85°F | Showers And Thunderstorms | 3 to 7 mph SW | 80% |
| Thursday Night | 68°F | Showers And Thunderstorms | 2 to 6 mph S | 80% |
| Friday | 85°F | Showers And Thunderstorms | 3 to 8 mph SW | 82% |
| Friday Night | 67°F | Showers And Thunderstorms | 6 mph SW | 82% |
| Saturday | 84°F | Chance Showers And Thunderstorms | 7 to 10 mph SW | 54% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 8 mph SW | 54% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 7 to 12 mph SW | 25% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 7 to 10 mph SW | 25% |
| Monday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 14 mph SW | 43% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 8 to 13 mph SW | 51% |
Forecast source: National Weather Service (api.weather.gov) for Youngstown (40.280, -79.366). Updated through the day.
Growing snapshot for Youngstown
Last spring frost
May 1
First fall frost
Oct 13
Growing season
164 days
More local growing data for Youngstown: nearby ZIP 15696 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
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Climate data from the nearest NOAA station, Mt Pleasant, Pa (8.3 mi from Youngstown). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.