New Hope, PA 18938 Frost Dates
New Hope, PA: when does the frost end?
Typically, the last spring freeze lands around 04/16, roughly 231 days out. Fall's first freeze usually shows up around 10/19, roughly 185 days after the last spring frost.
Zone 7a (0 to 5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for New Hope, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until New Hope's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around New Hope's last frost
04/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/30 and only about 1 year in 10 sees frost after that.
New Hope against the rest of the dataset
About 185 days separate New Hope's last and first frost, putting it 23,172 of 40,283 ZIP codes nationally. Within PA, it ranks 700 of 2,088.
Learn more
Before leaning on 18938's figures: local microclimates explains what one yard in New Hope can differ from the 18938 normal, while zone vs. frost date explains why Zone 7a and New Hope's frost date answer different questions.