Coatesville, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coatesville, a city in Chester County, Pennsylvania.
This Afternoon
69°F
Mostly Sunny
Mostly sunny, with a high near 69. South wind around 5 mph.
7-day forecast for Coatesville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Mostly Sunny | 5 mph S | 2% |
| Tonight | 48°F | Partly Cloudy | 0 to 5 mph S | 3% |
| Wednesday | 72°F | Patchy Fog then Partly Sunny | 0 to 10 mph S | 2% |
| Wednesday Night | 56°F | Mostly Cloudy | 5 mph S | 6% |
| Thursday | 71°F | Chance Light Rain | 5 to 10 mph S | 52% |
| Thursday Night | 59°F | Light Rain Likely | 0 to 5 mph SW | 69% |
| Friday | 69°F | Light Rain Likely | 0 to 5 mph SW | 73% |
| Friday Night | 51°F | Light Rain Likely | 0 to 5 mph NW | 73% |
| Saturday | 65°F | Slight Chance Light Rain | 5 to 10 mph NW | 17% |
| Saturday Night | 43°F | Slight Chance Light Rain then Partly Cloudy | 5 mph NW | 15% |
| Sunday | 61°F | Mostly Sunny | 5 mph NW | 9% |
| Sunday Night | 42°F | Chance Light Rain | 0 to 5 mph W | 26% |
| Monday | 57°F | Chance Light Rain | 5 to 10 mph NW | 28% |
| Monday Night | 39°F | Chance Light Rain | 5 to 10 mph W | 28% |
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 Nov 3, 2026.