Winterstown, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winterstown, a borough in York County, Pennsylvania.
Today
75°F
Partly Sunny
Partly sunny, with a high near 75. East wind around 6 mph.
7-day forecast for Winterstown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Partly Sunny | 6 mph E | 5% |
| Tonight | 60°F | Mostly Cloudy then Chance Rain Showers | 7 to 13 mph SE | 44% |
| Sunday | 75°F | Showers And Thunderstorms | 9 to 15 mph S | 91% |
| Sunday Night | 55°F | Showers And Thunderstorms | 5 to 13 mph W | 91% |
| Monday | 67°F | Slight Chance Rain Showers | 9 to 13 mph NE | 23% |
| Monday Night | 50°F | Chance Rain Showers | 6 to 12 mph NE | 43% |
| Tuesday | 60°F | Chance Rain Showers | 14 mph NE | 52% |
| Tuesday Night | 48°F | Chance Rain Showers | 13 to 16 mph NE | 50% |
| Wednesday | 59°F | Chance Rain Showers | 16 mph NE | 41% |
| Wednesday Night | 49°F | Chance Rain Showers | 15 mph NE | 40% |
| Thursday | 61°F | Chance Rain Showers | 15 mph NE | 40% |
| Thursday Night | 48°F | Chance Rain Showers | 7 to 12 mph NE | 35% |
| Friday | 65°F | Chance Rain Showers | 13 mph N | 30% |
| Friday Night | 48°F | Slight Chance Rain Showers | 7 to 12 mph N | 19% |
Forecast source: National Weather Service (api.weather.gov) for Winterstown (39.841, -76.617). Updated through the day.
Growing snapshot for Winterstown
Last spring frost
Apr 26
First fall frost
Oct 19
Growing season
177 days
Hardiness zone
7a
More local growing data for Winterstown: nearby ZIP 17313 weather · frost dates · planting calendar · Pennsylvania frost dates
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North York
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Climate data from the nearest NOAA station, York 3 Ssw Pump Stn, Pa (5.4 mi from Winterstown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.