Exton, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Exton, a community in Chester County, Pennsylvania.
Tonight
56°F
Partly Cloudy
Partly cloudy, with a low around 56. North wind around 5 mph.
7-day forecast for Exton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Partly Cloudy | 5 mph N | 0% |
| Saturday | 74°F | Mostly Sunny | 5 mph NE | 2% |
| Saturday Night | 62°F | Patchy Fog | 5 mph SE | 25% |
| Sunday | 75°F | Showers And Thunderstorms | 5 to 10 mph S | 82% |
| Sunday Night | 60°F | Showers And Thunderstorms | 5 to 10 mph NW | 83% |
| Monday | 68°F | Chance Rain Showers | 5 to 10 mph NE | 39% |
| Monday Night | 56°F | Chance Rain Showers | 5 to 10 mph NE | 32% |
| Tuesday | 62°F | Chance Rain Showers | 10 mph NE | 39% |
| Tuesday Night | 52°F | Chance Rain Showers | 10 to 15 mph NE | 39% |
| Wednesday | 61°F | Chance Rain Showers | 10 to 15 mph NE | 38% |
| Wednesday Night | 51°F | Chance Showers And Thunderstorms | 10 mph NE | 40% |
| Thursday | 62°F | Chance Showers And Thunderstorms | 10 mph NE | 37% |
| Thursday Night | 51°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 33% |
| Friday | 67°F | Chance Rain Showers | 5 to 10 mph N | 26% |
Forecast source: National Weather Service (api.weather.gov) for Exton (40.030, -75.633). Updated through the day.
Growing snapshot for Exton
Last spring frost
Apr 26
First fall frost
Oct 18
Growing season
174 days
Hardiness zone
7a
More local growing data for Exton: nearby ZIP 19341 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, W Chester 2 Nw, Pa (4.8 mi from Exton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.