Penryn, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Penryn, a community in Lancaster County, Pennsylvania.
Tonight
54°F
Mostly Clear
Mostly clear, with a low around 54. Northeast wind around 8 mph.
7-day forecast for Penryn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Mostly Clear | 8 mph NE | 0% |
| Saturday | 76°F | Mostly Sunny | 7 mph E | 2% |
| Saturday Night | 62°F | Mostly Cloudy then Chance Rain Showers | 7 to 12 mph SE | 27% |
| Sunday | 76°F | Showers And Thunderstorms | 9 to 14 mph S | 91% |
| Sunday Night | 61°F | Showers And Thunderstorms | 7 to 10 mph NW | 91% |
| Monday | 70°F | Chance Rain Showers | 12 mph NE | 37% |
| Monday Night | 56°F | Chance Rain Showers | 9 to 15 mph NE | 37% |
| Tuesday | 63°F | Chance Rain Showers | 16 mph NE | 49% |
| Tuesday Night | 51°F | Chance Rain Showers | 17 mph NE | 49% |
| Wednesday | 62°F | Chance Rain Showers | 17 mph NE | 43% |
| Wednesday Night | 51°F | Chance Showers And Thunderstorms | 13 to 16 mph NE | 45% |
| Thursday | 63°F | Chance Showers And Thunderstorms | 13 to 16 mph NE | 45% |
| Thursday Night | 52°F | Chance Showers And Thunderstorms | 7 to 12 mph NE | 38% |
| Friday | 68°F | Chance Rain Showers | 13 mph N | 28% |
Forecast source: National Weather Service (api.weather.gov) for Penryn (40.196, -76.370). Updated through the day.
Growing snapshot for Penryn
Last spring frost
Apr 30
First fall frost
Oct 10
Growing season
162 days
Hardiness zone
7a
More local growing data for Penryn: nearby ZIP 17545 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Landisville 2 Nw, Pa (3.7 mi from Penryn). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.