Dalton, PA 18420 Frost Dates
Frost dates for Dalton, PA, ZIP 18420
Typically, the last spring freeze lands around 05/14, roughly 259 days out. The first fall frost typically arrives around 10/01, about 140 frost-free days later.
Zone 6a (-10 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 Dalton, not a forecast for this year.
What to do before the first frost
Zone 6a around Dalton has about 5 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
05/14 is the middle of 30 years of NOAA records, not a promise. Plant by 04/30 and you're betting against frost in roughly 9 years out of 10. 05/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dalton compares
About 140 days separate Dalton's last and first frost, putting it 37,066 of 40,283 ZIP codes nationally. Within PA, it ranks 1,988 of 2,088.
Learn more
the frost range explains how to read the range around Dalton's dates instead of trusting one, and local microclimates explains what one yard in Dalton can differ from the 18420 normal.