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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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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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 Sep 19, 2026.