Chapman, PA 18014 Frost Dates
18014, near Chapman, PA: the frost window
Typically, the last spring freeze lands around 04/20, roughly 235 days out. Fall's first freeze usually shows up around 10/24, roughly 184 days after the last spring frost.
Chapman sits in USDA Zone 6b (-5 to 0°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
Chapman's growing season runs out in roughly 8 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 Chapman's last frost
04/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Chapman against the rest of the dataset
About 184 days separate Chapman's last and first frost, putting it 23,655 of 40,283 ZIP codes nationally. Within PA, it ranks 815 of 2,088.
Learn more
Two guides worth reading on 18014: zone vs. frost date, on why Zone 6b and Chapman's frost date answer different questions, and the frost range, on how to read the range around Chapman's dates instead of trusting one.