East Petersburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for East Petersburg, a borough in Lancaster County, Pennsylvania.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. Northeast wind 1 to 5 mph.
7-day forecast for East Petersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 1 to 5 mph NE | 0% |
| Tonight | 66°F | Mostly Cloudy then Patchy Fog | 3 mph E | 5% |
| Wednesday | 84°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 7 mph E | 68% |
| Wednesday Night | 71°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 7 mph SE | 57% |
| Thursday | 89°F | Partly Sunny then Showers And Thunderstorms Likely | 3 to 10 mph S | 66% |
| Thursday Night | 71°F | Showers And Thunderstorms Likely | 2 to 9 mph S | 66% |
| Friday | 89°F | Mostly Sunny then Showers And Thunderstorms Likely | 2 to 7 mph SW | 66% |
| Friday Night | 70°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 1 to 6 mph SW | 66% |
| Saturday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 1 to 7 mph W | 50% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 50% |
| Sunday | 89°F | Mostly Sunny | 2 to 7 mph W | 14% |
| Sunday Night | 70°F | Partly Cloudy | 2 to 6 mph SW | 14% |
| Monday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 10 mph W | 22% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph W | 22% |
Forecast source: National Weather Service (api.weather.gov) for East Petersburg (40.103, -76.350). Updated through the day.
Growing snapshot for East Petersburg
Last spring frost
Apr 18
First fall frost
Oct 25
Growing season
186 days
Hardiness zone
7a
More local growing data for East Petersburg: nearby ZIP 17520 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Lancaster Ap, Pa (3.3 mi from East Petersburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.