When to plant in Coatesville, PA
USDA Zone 7aEverything below — frost dates, hardiness zone, and what to plant when in Coatesville, Pennsylvania — is derived from the closest NOAA station with complete climate normals.
Zone 7a means many perennials and even some tender shrubs overwinter in Coatesville, while your frost dates still decide when annuals go out.
The average first fall frost in Coatesville is now 6 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
COATESVILLE 2 W · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Coatesville’s own odds, recorded at COATESVILLE 2 W.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 17 | May 1 | Apr 18 | Oct 1 | Oct 13 | Oct 26 |
| 32°F | May 4 | Apr 19 | Apr 3 | Oct 11 | Oct 25 | Nov 7 |
| 28°F | Apr 18 | Apr 3 | Mar 19 | Oct 24 | Nov 6 | Nov 21 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Coatesville, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 14 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Coatesville planting FAQ
When is the last spring frost in Coatesville, PA?
On average, the last spring frost in Coatesville is around April 19 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Coatesville, PA?
The first fall frost in Coatesville typically arrives around October 25 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Coatesville in?
Coatesville is in USDA hardiness zone 7a. In zone 7a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Coatesville?
There are roughly 189 frost-free days in Coatesville (a moderate growing season), running from the average last frost around April 19 to the first fall frost near October 25.
When should I plant tomatoes in Coatesville?
In Coatesville, start tomato seeds indoors around February 22–March 8, then transplant seedlings outdoors around April 26 once the danger of frost has passed.
Never miss a window in Coatesville
An email when it’s time to start seeds, transplant, and sow — timed to Coatesville’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- West Chester · 18 km
- Hockessin · 25 km
- Phoenixville · 30 km
- Pike Creek Valley · 30 km
- Pottstown · 33 km
- Newark · 35 km
- Brookside · 37 km
- Wilmington · 37 km
Frost dates recorded at COATESVILLE 2 W, 3 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Coatesville, PA — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00361591. Retrieved from https://blissgarden.com/pennsylvania/coatesville.