Harveys Lake, PA 18636 Frost Dates
Harveys Lake, PA: when does the frost end?
Typically, the last spring freeze lands around 04/23, roughly 238 days out. Fall's first freeze usually shows up around 10/20, roughly 178 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
With roughly 8 weeks until Harveys Lake's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Harveys Lake's last frost
04/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/10 and only about 1 year in 10 sees frost after that.
Harveys Lake against the rest of the dataset
About 178 days separate Harveys Lake's last and first frost, putting it 25,728 of 40,283 ZIP codes nationally. Within PA, it ranks 916 of 2,088.
Learn more
Before leaning on 18636's figures: zone vs. frost date explains why Zone 6a and Harveys Lake's frost date answer different questions, while the frost range explains how to read the range around Harveys Lake's dates instead of trusting one.