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
74°F
Mostly Sunny
Mostly sunny, with a high near 74. South wind 3 to 13 mph.
7-day forecast for East Petersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Mostly Sunny | 3 to 13 mph S | 1% |
| Tonight | 59°F | Mostly Cloudy then Slight Chance Light Rain | 8 to 12 mph SE | 19% |
| Thursday | 73°F | Light Rain | 9 to 13 mph S | 79% |
| Thursday Night | 58°F | Light Rain Likely | 2 to 7 mph SW | 63% |
| Friday | 70°F | Light Rain Likely | 3 mph N | 63% |
| Friday Night | 47°F | Chance Light Rain then Partly Cloudy | 2 to 6 mph NW | 30% |
| Saturday | 62°F | Mostly Sunny | 6 to 14 mph NW | 10% |
| Saturday Night | 40°F | Partly Cloudy | 13 mph W | 10% |
| Sunday | 60°F | Mostly Sunny | 9 to 13 mph NW | 4% |
| Sunday Night | 38°F | Mostly Clear | 7 to 10 mph W | 4% |
| Monday | 59°F | Sunny | 10 to 17 mph W | 5% |
| Monday Night | 36°F | Mostly Clear | 5 to 12 mph W | 4% |
| Tuesday | 63°F | Sunny | 6 to 15 mph W | 2% |
| Tuesday Night | 37°F | Mostly Clear | 6 to 9 mph W | 0% |
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 Nov 4, 2026.