Yorklyn, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Yorklyn, a community in York County, Pennsylvania.
Overnight
51°F
Patchy Fog
Patchy fog after 5am. Mostly clear, with a low around 51. South wind around 3 mph.
7-day forecast for Yorklyn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Patchy Fog | 3 mph S | 0% |
| Wednesday | 75°F | Patchy Fog then Mostly Sunny | 1 to 12 mph S | 1% |
| Wednesday Night | 61°F | Mostly Cloudy then Chance Light Rain | 8 to 13 mph S | 31% |
| Thursday | 74°F | Light Rain | 8 to 14 mph S | 75% |
| Thursday Night | 58°F | Light Rain Likely | 1 to 7 mph SW | 55% |
| Friday | 70°F | Light Rain Likely | 3 mph N | 55% |
| Friday Night | 48°F | Chance Light Rain then Partly Cloudy | 1 to 5 mph NW | 27% |
| Saturday | 63°F | Mostly Sunny | 5 to 13 mph NW | 10% |
| Saturday Night | 41°F | Partly Cloudy | 12 mph W | 10% |
| Sunday | 60°F | Mostly Sunny | 13 mph NW | 4% |
| Sunday Night | 39°F | Mostly Clear | 10 mph W | 3% |
| Monday | 60°F | Sunny | 10 to 15 mph W | 4% |
| Monday Night | 38°F | Mostly Clear | 6 to 10 mph W | 4% |
| Tuesday | 64°F | Sunny | 7 to 13 mph W | 1% |
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
Cross Roads
Dallastown
Delta
Dillsburg
Dover
East Prospect
East York
Emigsville
Fawn Grove
Felton
Franklintown
Glen Rock
Goldsboro
Grantley
Hallam
Hanover
Jacobus
Jefferson
Lewisberry
Loganville
Manchester
Mount Royal
Mount Wolf
New Freedom
New Market
New Salem
North York
Parkville
Pennville
Pleasureville
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 Nov 4, 2026.