Adamstown, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Adamstown, a borough in Lancaster County, Pennsylvania.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. East wind 0 to 3 mph.
7-day forecast for Adamstown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 0 to 3 mph E | 0% |
| Tonight | 66°F | Mostly Cloudy then Patchy Fog | 0 to 3 mph E | 3% |
| Wednesday | 84°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 1 to 7 mph E | 64% |
| Wednesday Night | 70°F | Chance Showers And Thunderstorms | 2 to 7 mph SE | 42% |
| Thursday | 88°F | Partly Sunny then Showers And Thunderstorms Likely | 3 to 10 mph S | 67% |
| Thursday Night | 70°F | Showers And Thunderstorms Likely | 2 to 9 mph SW | 67% |
| Friday | 88°F | Mostly Sunny then Showers And Thunderstorms Likely | 2 to 7 mph SW | 63% |
| Friday Night | 69°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 1 to 6 mph SW | 63% |
| Saturday | 86°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 8 mph W | 51% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 2 to 7 mph SW | 51% |
| Sunday | 87°F | Mostly Sunny | 2 to 8 mph W | 13% |
| Sunday Night | 70°F | Partly Cloudy | 2 to 6 mph SW | 13% |
| Monday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 10 mph W | 20% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms | 3 to 9 mph SW | 21% |
Forecast source: National Weather Service (api.weather.gov) for Adamstown (40.244, -76.065). Updated through the day.
Growing snapshot for Adamstown
Last spring frost
Apr 26
First fall frost
Oct 19
Growing season
176 days
Hardiness zone
7a
More local growing data for Adamstown: nearby ZIP 19501 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Blue Marsh Lake, Pa (9.6 mi from Adamstown). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.