Exton, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Exton, a community in Chester County, Pennsylvania.
Tonight
49°F
Mostly Clear then Patchy Fog
Patchy fog after 5am. Mostly clear, with a low around 49. South wind around 5 mph.
7-day forecast for Exton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Mostly Clear then Patchy Fog | 5 mph S | 2% |
| Wednesday | 73°F | Patchy Fog then Sunny | 5 to 10 mph S | 3% |
| Wednesday Night | 58°F | Mostly Cloudy | 5 mph S | 9% |
| Thursday | 72°F | Light Rain Likely | 5 to 10 mph S | 58% |
| Thursday Night | 60°F | Light Rain Likely | 0 to 5 mph SW | 74% |
| Friday | 69°F | Light Rain Likely | 0 to 5 mph NW | 74% |
| Friday Night | 50°F | Light Rain Likely | 0 to 5 mph NW | 71% |
| Saturday | 64°F | Chance Light Rain | 5 to 10 mph NW | 25% |
| Saturday Night | 40°F | Slight Chance Light Rain then Partly Cloudy | 5 mph NW | 15% |
| Sunday | 60°F | Mostly Sunny | 5 mph W | 8% |
| Sunday Night | 39°F | Slight Chance Light Rain | 5 mph W | 20% |
| Monday | 59°F | Slight Chance Light Rain | 10 mph NW | 23% |
| Monday Night | 38°F | Slight Chance Light Rain | 5 to 10 mph W | 20% |
| Tuesday | 62°F | Sunny | 10 to 15 mph W | 14% |
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 Nov 4, 2026.