Wormleysburg, PA 17025 Frost Dates
Frost dates for Wormleysburg, PA, ZIP 17025
Around 04/09 is the usual last spring frost, about 224 days away. The first fall frost typically arrives around 11/01, about 205 frost-free days later.
Zone 7a (0 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 Wormleysburg, not a forecast for this year.
What to do before the first frost
Zone 7a around Wormleysburg 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.
The actual range around Wormleysburg's last frost
04/09 is the middle of 30 years of NOAA records, not a promise. Plant by 03/27 and you're betting against frost in roughly 9 years out of 10. 04/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Wormleysburg compares
About 205 days separate Wormleysburg's last and first frost, putting it 16,306 of 40,283 ZIP codes nationally. Within PA, it ranks 161 of 2,088.
Learn more
local microclimates explains what one yard in Wormleysburg can differ from the 17025 normal, and zone vs. frost date explains why Zone 7a and Wormleysburg's frost date answer different questions.