Frost dates for Allentown, Pennsylvania
In a typical year, Allentown’s last spring frost lands around Apr 20 and the first fall frost around Oct 24, a growing season of about 187 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 7a.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Apr 6 | Oct 8 |
| 50 percent | Apr 20 | Oct 24 |
| 90 percent | May 6 | Nov 6 |
A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.
Soil in Allentown is typically around 73°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in Allentown
- Spinach (Space)
- Arugula (Astro)
- Mustard greens (Red Giant)
- Tatsoi (Tatsoi)
- Dill (Bouquet)
- Turnip (Purple Top White Globe)
- Cilantro (Santo)
- Sweet alyssum (Snow Crystals)
Timing comes from the same temperature engine the app uses, run against Allentown’s normals for today.
Nearby cities
- Reading, PA (around Apr 14 to Oct 29)
- Philadelphia, PA (around Mar 30 to Nov 17)
- Wilmington, DE (around Apr 7 to Nov 4)
- Elizabeth, NJ (around Apr 2 to Nov 10)
- Newark, NJ (around Apr 4 to Nov 6)
Row & Bed is a plant reference built around your garden: your zone, your frost dates, your forecast, and a cited page for every variety in your beds.
Set up your garden