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Clay, PA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Clay, a community in Lancaster County, Pennsylvania.

Today
76°F
Partly Sunny
Partly sunny, with a high near 76. East wind around 7 mph.

7-day forecast for Clay

WhenTempForecastWindPrecip
Today 76°F Partly Sunny 7 mph E 2%
Tonight 60°F Mostly Cloudy then Rain Showers Likely 6 to 10 mph SE 68%
Sunday 74°F Rain Showers 9 to 14 mph S 92%
Sunday Night 57°F Showers And Thunderstorms 5 to 10 mph NW 92%
Monday 69°F Slight Chance Rain Showers 12 mph NE 16%
Monday Night 50°F Chance Rain Showers 7 to 13 mph NE 39%
Tuesday 62°F Chance Rain Showers 15 mph NE 44%
Tuesday Night 49°F Chance Rain Showers 13 to 17 mph NE 40%
Wednesday 62°F Chance Rain Showers 18 mph NE 38%
Wednesday Night 49°F Chance Rain Showers 14 to 17 mph NE 34%
Thursday 63°F Chance Rain Showers 17 mph NE 35%
Thursday Night 49°F Chance Rain Showers 9 to 14 mph NE 29%
Friday 67°F Slight Chance Rain Showers 14 mph N 22%
Friday Night 49°F Slight Chance Rain Showers 8 to 13 mph N 22%

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

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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 Sep 19, 2026.