Hatfield, PA 18932 Frost Dates
18932, near Hatfield, PA: the frost window
Typically, the last spring freeze lands around 04/26, roughly 241 days out. Fall's first freeze usually shows up around 10/17, roughly 175 days after the last spring frost.
Hatfield sits in USDA Zone 7a (0 to 5°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
Hatfield's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/12 and only about 1 year in 10 sees frost after that.
Hatfield against the rest of the dataset
About 175 days separate Hatfield's last and first frost, putting it 26,915 of 40,283 ZIP codes nationally. Within PA, it ranks 1,149 of 2,088.
Learn more
Two guides worth reading on 18932: the frost range, on how to read the range around Hatfield's dates instead of trusting one, and local microclimates, on what one yard in Hatfield can differ from the 18932 normal.