Sugar Grove, PA 16350 Frost Dates
Frost dates for Sugar Grove, PA, ZIP 16350
Around 05/22 is the usual last spring frost, about 267 days away. The first fall frost typically arrives around 09/30, about 131 frost-free days later.
Sugar Grove sits in USDA Zone 5b (-15 to -10°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 5b around Sugar Grove 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
05/22 is the middle of 30 years of NOAA records, not a promise. Plant by 05/06 and you're betting against frost in roughly 9 years out of 10. 06/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sugar Grove compares
Sugar Grove's growing season runs about 131 days, ranking 38,323 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 2,080 of 2,088.
Learn more
zone vs. frost date explains why Zone 5b and Sugar Grove's frost date answer different questions, and the frost range explains how to read the range around Sugar Grove's dates instead of trusting one.