Clay, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clay, a community in Lancaster County, Pennsylvania.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. East wind around 3 mph.
7-day forecast for Clay
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 3 mph E | 0% |
| Tonight | 66°F | Mostly Cloudy then Patchy Fog | 3 mph E | 4% |
| Wednesday | 84°F | Showers And Thunderstorms Likely | 1 to 7 mph E | 68% |
| Wednesday Night | 70°F | Chance Showers And Thunderstorms | 2 to 7 mph SE | 51% |
| Thursday | 89°F | Partly Sunny then Showers And Thunderstorms Likely | 3 to 10 mph S | 69% |
| Thursday Night | 70°F | Showers And Thunderstorms Likely | 1 to 9 mph SW | 69% |
| Friday | 88°F | Mostly Sunny then Showers And Thunderstorms Likely | 1 to 7 mph SW | 67% |
| Friday Night | 69°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 1 to 6 mph SW | 67% |
| Saturday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 1 to 7 mph W | 54% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 1 to 6 mph SW | 54% |
| Sunday | 88°F | Mostly Sunny | 1 to 7 mph W | 13% |
| Sunday Night | 70°F | Partly Cloudy | 1 to 6 mph SW | 13% |
| Monday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 10 mph W | 21% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms | 3 to 8 mph W | 21% |
Forecast source: National Weather Service (api.weather.gov) for Clay (40.219, -76.239). Updated through the day.
Growing snapshot for Clay
Last spring frost
Apr 18
First fall frost
Oct 25
Growing season
186 days
Hardiness zone
7a
More local growing data for Clay: nearby ZIP 17543 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Adamstown
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Brownstown
Cambridge
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Columbia
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Denver
East Earl
East Petersburg
Elizabethtown
Ephrata
Falmouth
Farmersville
Fivepointville
Gap
Georgetown
Goodville
Gordonville
Hinkletown
Hopeland
Intercourse
Kirkwood
Lampeter
Lancaster
Climate data from the nearest NOAA station, Lancaster Ap, Pa (4.2 mi from Clay). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.