Kingston, PA 18767 Frost Dates
Kingston, PA: when does the frost end?
Around 04/23 is the usual last spring frost, about 238 days away. Fall's first freeze usually shows up around 10/20, roughly 178 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Kingston in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 8 weeks until Kingston's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/23 isn't a guarantee
04/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/10 and only about 1 year in 10 sees frost after that.
Kingston against the rest of the dataset
Kingston's growing season runs about 178 days, ranking 25,638 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 889 of 2,088.
Learn more
Before leaning on 18767's figures: the frost range explains how to read the range around Kingston's dates instead of trusting one, while local microclimates explains what one yard in Kingston can differ from the 18767 normal.