Kingston, PA 18690 Frost Dates
Frost dates for Kingston, PA, ZIP 18690
Around 04/23 is the usual last spring frost, about 238 days away. The first fall frost typically arrives around 10/20, about 178 frost-free days later.
The USDA Plant Hardiness Zone Map puts Kingston 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 Kingston 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.
How much risk comes with planting early here
04/23 is the middle of 30 years of NOAA records, not a promise. Plant by 04/09 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Kingston compares
Kingston's growing season runs about 178 days, ranking 25,632 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 883 of 2,088.
Learn more
zone vs. frost date explains why Zone 6a and Kingston's frost date answer different questions, and the frost range explains how to read the range around Kingston's dates instead of trusting one.