Exton, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Exton, a community in Chester County, Pennsylvania.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. Northeast wind 0 to 5 mph.
7-day forecast for Exton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Tonight | 66°F | Mostly Cloudy | 0 mph | 8% |
| Wednesday | 84°F | Showers And Thunderstorms Likely | 0 to 5 mph E | 76% |
| Wednesday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 50% |
| Thursday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 30% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms | 5 mph SW | 40% |
| Friday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph SW | 45% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 45% |
| Saturday | 87°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 40% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 40% |
| Sunday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 15% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph SW | 15% |
| Monday | 89°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph W | 15% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms | 5 mph W | 18% |
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
Nearby towns & communities
Atglen
Avondale
Berwyn
Caln
Chadds Ford
Chesterbrook
Christiana
Coatesville
Cochranville
Devon
Downingtown
Eagle
Eagleview
Elverson
Frazer
Glenmoore
Hamorton
Hayti
Honey Brook
Kennett Square
Kimberton
Lincoln University
Lionville
Little Britain
Malvern
Marshallton
Modena
Nottingham
Oxford
Paoli
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 Aug 4, 2026.