Hopewell, PA 16650 Frost Dates
16650, near Hopewell, PA: the frost window
Around 04/23 is the usual last spring frost, about 238 days away. Fall's first freeze usually shows up around 10/21, roughly 177 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Hopewell in Zone 6b (-5 to 0°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
Hopewell'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 Hopewell's last frost
04/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/08 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.
Hopewell against the rest of the dataset
At roughly 177 frost-free days, Hopewell places 26,273 of 40,283 ZIP codes in this dataset. Within PA, it ranks 999 of 2,088.
Learn more
Two guides worth reading on 16650: local microclimates, on what one yard in Hopewell can differ from the 16650 normal, and zone vs. frost date, on why Zone 6b and Hopewell's frost date answer different questions.