Greensboro, PA 15338 Frost Dates
15338, near Greensboro, PA: the frost window
Typically, the last spring freeze lands around 04/28, roughly 243 days out. Fall's first freeze usually shows up around 10/21, roughly 175 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Greensboro 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
Greensboro's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Greensboro's last frost
04/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/14 and only about 1 year in 10 sees frost after that.
Greensboro against the rest of the dataset
Greensboro's growing season runs about 175 days, ranking 27,239 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,266 of 2,088.
Learn more
Two guides worth reading on 15338: the frost range, on how to read the range around Greensboro's dates instead of trusting one, and local microclimates, on what one yard in Greensboro can differ from the 15338 normal.