State College, PA 16803 Frost Dates
Frost dates for State College, PA, ZIP 16803
Around 04/20 is the usual last spring frost, about 235 days away. The first fall frost typically arrives around 10/26, about 187 frost-free days later.
State College sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 6b around State College 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.
Why 04/20 isn't a guarantee
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 04/07 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How State College compares
At roughly 187 frost-free days, State College places 22,289 of 40,283 ZIP codes in this dataset. Within PA, it ranks 605 of 2,088.
Learn more
the frost range explains how to read the range around State College's dates instead of trusting one, and local microclimates explains what one yard in State College can differ from the 16803 normal.