Doylestown, PA 18933 Frost Dates
Doylestown, PA: when does the frost end?
Typically, the last spring freeze lands around 04/13, roughly 228 days out. Fall's first freeze usually shows up around 10/30, roughly 198 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Doylestown in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 9 weeks until Doylestown's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/27 and only about 1 year in 10 sees frost after that.
Doylestown against the rest of the dataset
Doylestown's growing season runs about 198 days, ranking 18,409 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 337 of 2,088.
Learn more
Before leaning on 18933's figures: zone vs. frost date explains why Zone 7a and Doylestown's frost date answer different questions, while the frost range explains how to read the range around Doylestown's dates instead of trusting one.