Youngstown, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Youngstown, a borough in Westmoreland County, Pennsylvania.
Overnight
58°F
Partly Cloudy
Partly cloudy, with a low around 58. East wind around 5 mph.
7-day forecast for Youngstown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Partly Cloudy | 5 mph E | 1% |
| Saturday | 78°F | Partly Sunny | 6 mph SE | 3% |
| Saturday Night | 64°F | Chance Rain Showers | 6 to 12 mph SE | 43% |
| Sunday | 78°F | Showers And Thunderstorms | 7 to 12 mph SW | 97% |
| Sunday Night | 56°F | Showers And Thunderstorms | 8 mph N | 96% |
| Monday | 69°F | Chance Rain Showers | 10 mph NE | 42% |
| Monday Night | 53°F | Showers And Thunderstorms Likely | 12 to 15 mph E | 72% |
| Tuesday | 64°F | Showers And Thunderstorms Likely | 16 to 21 mph E | 72% |
| Tuesday Night | 50°F | Rain Showers Likely | 23 mph E | 58% |
| Wednesday | 61°F | Rain Showers Likely | 21 mph E | 58% |
| Wednesday Night | 50°F | Chance Showers And Thunderstorms | 14 to 22 mph E | 54% |
| Thursday | 66°F | Chance Rain Showers | 14 mph E | 54% |
| Thursday Night | 50°F | Chance Showers And Thunderstorms | 5 to 13 mph E | 32% |
| Friday | 69°F | Slight Chance Rain Showers | 5 to 9 mph NE | 19% |
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 Sep 19, 2026.