Yorklyn, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Yorklyn, a community in York County, Pennsylvania.
Tonight
55°F
Partly Cloudy
Partly cloudy, with a low around 55. North wind 3 to 8 mph.
7-day forecast for Yorklyn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Partly Cloudy | 3 to 8 mph N | 0% |
| Saturday | 77°F | Mostly Sunny | 6 mph E | 3% |
| Saturday Night | 63°F | Mostly Cloudy then Slight Chance Rain Showers | 6 to 12 mph SE | 22% |
| Sunday | 79°F | Showers And Thunderstorms | 9 to 14 mph S | 86% |
| Sunday Night | 61°F | Showers And Thunderstorms | 5 to 9 mph NW | 86% |
| Monday | 71°F | Chance Rain Showers | 10 mph NE | 39% |
| Monday Night | 56°F | Chance Rain Showers | 8 to 13 mph NE | 43% |
| Tuesday | 64°F | Rain Showers Likely | 14 mph NE | 57% |
| Tuesday Night | 52°F | Rain Showers Likely | 15 mph NE | 57% |
| Wednesday | 62°F | Chance Rain Showers | 15 mph NE | 47% |
| Wednesday Night | 52°F | Chance Showers And Thunderstorms | 10 to 14 mph NE | 48% |
| Thursday | 64°F | Chance Showers And Thunderstorms | 10 to 14 mph NE | 46% |
| Thursday Night | 52°F | Chance Showers And Thunderstorms | 6 to 9 mph N | 39% |
| Friday | 68°F | Chance Rain Showers | 10 mph N | 25% |
Forecast source: National Weather Service (api.weather.gov) for Yorklyn (39.993, -76.643). Updated through the day.
Growing snapshot for Yorklyn
Last spring frost
Apr 26
First fall frost
Oct 19
Growing season
177 days
Hardiness zone
7a
More local growing data for Yorklyn: nearby ZIP 17406 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
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Grantley
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Jacobus
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Manchester
Mount Royal
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North York
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Climate data from the nearest NOAA station, York 3 Ssw Pump Stn, Pa (8.9 mi from Yorklyn). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.