Coatesville, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coatesville, a city in Chester County, Pennsylvania.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. Northeast wind 0 to 5 mph.
7-day forecast for Coatesville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Tonight | 66°F | Mostly Cloudy | 0 mph | 9% |
| Wednesday | 83°F | Showers And Thunderstorms Likely | 0 to 5 mph E | 75% |
| Wednesday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 46% |
| Thursday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 35% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms | 0 to 10 mph SW | 43% |
| Friday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 50% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 50% |
| Saturday | 86°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 42% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 42% |
| 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 Partly Cloudy | 0 to 5 mph SW | 15% |
| Monday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph W | 19% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms | 5 mph W | 19% |
Forecast source: National Weather Service (api.weather.gov) for Coatesville (39.985, -75.819). Updated through the day.
Growing snapshot for Coatesville
Last spring frost
Apr 19
First fall frost
Oct 25
Growing season
190 days
Hardiness zone
7a
More local growing data for Coatesville: nearby ZIP 19358 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Coatesville 2 W, Pa (3.1 mi from Coatesville). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.