Walnutport, PA 18088 Frost Dates
Frost dates for Walnutport, PA, ZIP 18088
The last spring frost here typically falls around 04/21, about 236 days from today. The first fall frost typically arrives around 10/23, about 184 frost-free days later.
Walnutport sits in USDA Zone 6b (-5 to 0°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 6b around Walnutport has about 8 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.
How much risk comes with planting early here
04/21 is the middle of 30 years of NOAA records, not a promise. Plant by 04/07 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Walnutport compares
Walnutport's growing season runs about 184 days, ranking 23,570 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 809 of 2,088.
Learn more
local microclimates explains what one yard in Walnutport can differ from the 18088 normal, and zone vs. frost date explains why Zone 6b and Walnutport's frost date answer different questions.