Chester, PA 19013 Frost Dates
19013, near Chester, PA: the frost window
Typically, the last spring freeze lands around 04/02, roughly 217 days out. Fall's first freeze usually shows up around 11/10, roughly 224 days after the last spring frost.
Chester sits in USDA Zone 7b (5 to 10°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Chester's growing season runs out in roughly 11 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Chester's last frost
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/13 and only about 1 year in 10 sees frost after that.
Chester against the rest of the dataset
About 224 days separate Chester's last and first frost, putting it 11,748 of 40,283 ZIP codes nationally. Within PA, it ranks 3 of 2,088.
Learn more
Two guides worth reading on 19013: zone vs. frost date, on why Zone 7b and Chester's frost date answer different questions, and the frost range, on how to read the range around Chester's dates instead of trusting one.