Chester Heights, PA 19373 Frost Dates
Chester Heights, PA: when does the frost end?
Typically, the last spring freeze lands around 04/26, roughly 241 days out. Fall's first freeze usually shows up around 10/18, roughly 174 days after the last spring frost.
Chester Heights 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
With roughly 7 weeks until Chester Heights's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/26 isn't a guarantee
04/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/11 and only about 1 year in 10 sees frost after that.
Chester Heights against the rest of the dataset
Chester Heights's growing season runs about 174 days, ranking 27,475 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,305 of 2,088.
Learn more
Before leaning on 19373's figures: zone vs. frost date explains why Zone 7a and Chester Heights's frost date answer different questions, while the frost range explains how to read the range around Chester Heights's dates instead of trusting one.