New Alexandria, PA 15621 Frost Dates
Frost dates for New Alexandria, PA, ZIP 15621
Around 05/01 is the usual last spring frost, about 246 days away. The first fall frost typically arrives around 10/13, about 164 frost-free days later.
Zone 6b (-5 to 0°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 New Alexandria, not a forecast for this year.
What to do before the first frost
Zone 6b around New Alexandria has about 7 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
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How New Alexandria compares
At roughly 164 frost-free days, New Alexandria places 31,128 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,604 of 2,088.
Learn more
local microclimates explains what one yard in New Alexandria can differ from the 15621 normal, and zone vs. frost date explains why Zone 6b and New Alexandria's frost date answer different questions.