Youngsville, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Youngsville, a borough in Warren County, Pennsylvania.
This Afternoon
75°F
Partly Sunny
Partly sunny, with a high near 75. North wind around 6 mph.
7-day forecast for Youngsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Partly Sunny | 6 mph N | 0% |
| Tonight | 50°F | Areas Of Fog | 1 to 6 mph NE | 1% |
| Saturday | 73°F | Patchy Fog then Partly Sunny | 3 mph SE | 13% |
| Saturday Night | 58°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph SE | 86% |
| Sunday | 72°F | Showers And Thunderstorms | 2 to 6 mph W | 86% |
| Sunday Night | 49°F | Chance Rain Showers | 3 to 7 mph NE | 47% |
| Monday | 67°F | Mostly Cloudy | 7 mph NE | 12% |
| Monday Night | 47°F | Chance Rain Showers | 5 to 8 mph E | 48% |
| Tuesday | 64°F | Chance Rain Showers | 8 mph E | 48% |
| Tuesday Night | 46°F | Showers And Thunderstorms Likely | 6 to 12 mph E | 58% |
| Wednesday | 62°F | Rain Showers Likely | 8 mph SE | 58% |
| Wednesday Night | 46°F | Chance Showers And Thunderstorms | 5 to 9 mph SE | 54% |
| Thursday | 65°F | Chance Rain Showers | 6 mph E | 45% |
| Thursday Night | 47°F | Chance Rain Showers | 1 to 6 mph NE | 35% |
Forecast source: National Weather Service (api.weather.gov) for Youngsville (41.852, -79.317). Updated through the day.
Growing snapshot for Youngsville
Last spring frost
May 22
First fall frost
Sep 30
Growing season
131 days
Hardiness zone
5b
More local growing data for Youngsville: nearby ZIP 16371 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Chandlers Valley 1Se, Pa (4.5 mi from Youngsville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.