Harrisville, PA 16038 Frost Dates
When can you plant in Harrisville, PA?
The last spring frost here typically falls around 05/15, about 260 days from today. The first fall frost typically arrives around 10/03, about 140 frost-free days later.
Harrisville sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 5 weeks of growing season left in Harrisville before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Harrisville's last frost
05/15 is the middle of 30 years of NOAA records, not a promise. Plant by 04/30 and you're betting against frost in roughly 9 years out of 10. 06/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Harrisville compares
At roughly 140 frost-free days, Harrisville places 37,092 of 40,283 ZIP codes in this dataset. Within PA, it ranks 2,002 of 2,088.
Learn more
zone vs. frost date covers why Zone 6a and Harrisville's frost date answer different questions. the frost range covers how to read the range around Harrisville's dates instead of trusting one.