Morrisville, PA 19067 Frost Dates
Frost dates for Morrisville, PA, ZIP 19067
The last spring frost here typically falls around 04/17, about 232 days from today. The first fall frost typically arrives around 10/28, about 192 frost-free days later.
Morrisville sits in USDA Zone 7a (0 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
Zone 7a around Morrisville has about 9 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 04/17 isn't a guarantee
04/17 is the middle of 30 years of NOAA records, not a promise. Plant by 04/02 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Morrisville compares
Morrisville's growing season runs about 192 days, ranking 20,224 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 516 of 2,088.
Learn more
zone vs. frost date explains why Zone 7a and Morrisville's frost date answer different questions, and the frost range explains how to read the range around Morrisville's dates instead of trusting one.