Clearfield, PA 16830 Frost Dates
Frost dates for Clearfield, PA, ZIP 16830
Around 05/04 is the usual last spring frost, about 249 days away. The first fall frost typically arrives around 10/11, about 161 frost-free days later.
The USDA Plant Hardiness Zone Map puts Clearfield in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 6a around Clearfield has about 6 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 Clearfield's last frost
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/19 and you're betting against frost in roughly 9 years out of 10. 05/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Clearfield compares
Clearfield's growing season runs about 161 days, ranking 32,021 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,673 of 2,088.
Learn more
the frost range explains how to read the range around Clearfield's dates instead of trusting one, and local microclimates explains what one yard in Clearfield can differ from the 16830 normal.