Strasburg, PA 17505 Frost Dates
Frost dates for Strasburg, PA, ZIP 17505
Around 04/18 is the usual last spring frost, about 233 days away. The first fall frost typically arrives around 10/25, about 186 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 Strasburg, not a forecast for this year.
What to do before the first frost
Zone 7a around Strasburg 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.
The actual range around Strasburg's last frost
04/18 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Strasburg compares
About 186 days separate Strasburg's last and first frost, putting it 22,810 of 40,283 ZIP codes nationally. Within PA, it ranks 668 of 2,088.
Learn more
local microclimates explains what one yard in Strasburg can differ from the 17505 normal, and zone vs. frost date explains why Zone 7a and Strasburg's frost date answer different questions.