Harveys Lake, PA 18656 Frost Dates
18656, near Harveys Lake, PA: the frost window
The last spring frost here typically falls around 05/06, about 251 days from today. Fall's first freeze usually shows up around 10/07, roughly 154 days after the last spring frost.
Zone 6a (-10 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 Harveys Lake, not a forecast for this year.
Stretching the season past the first frost
Harveys Lake's growing season runs out in roughly 6 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
05/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/22 and only about 1 year in 10 sees frost after that.
Harveys Lake against the rest of the dataset
At roughly 154 frost-free days, Harveys Lake places 34,325 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,890 of 2,088.
Learn more
Two guides worth reading on 18656: the frost range, on how to read the range around Harveys Lake's dates instead of trusting one, and local microclimates, on what one yard in Harveys Lake can differ from the 18656 normal.