Penryn, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Penryn, a community in Lancaster County, Pennsylvania.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. East wind around 5 mph.
7-day forecast for Penryn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 5 mph E | 0% |
| Tonight | 66°F | Mostly Cloudy | 1 to 5 mph E | 4% |
| Wednesday | 83°F | Showers And Thunderstorms Likely | 2 to 7 mph E | 70% |
| Wednesday Night | 70°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 7 mph SE | 58% |
| Thursday | 88°F | Partly Sunny then Showers And Thunderstorms Likely | 3 to 10 mph S | 69% |
| Thursday Night | 71°F | Showers And Thunderstorms Likely | 2 to 9 mph SW | 69% |
| Friday | 88°F | Mostly Sunny then Showers And Thunderstorms Likely | 2 to 7 mph SW | 68% |
| Friday Night | 70°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 1 to 6 mph SW | 68% |
| Saturday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 1 to 8 mph W | 53% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 1 to 6 mph SW | 53% |
| Sunday | 88°F | Mostly Sunny | 2 to 7 mph W | 13% |
| Sunday Night | 70°F | Partly Cloudy | 2 to 6 mph SW | 13% |
| Monday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 10 mph W | 21% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms | 5 to 9 mph W | 21% |
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 Aug 4, 2026.