Clymer, PA 15729 Frost Dates
15729, near Clymer, PA: the frost window
The last spring frost here typically falls around 05/10, about 255 days from today. Fall's first freeze usually shows up around 10/12, roughly 155 days after the last spring frost.
Clymer sits in USDA Zone 6a (-10 to -5°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.
Stretching the season past the first frost
Clymer's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/10 isn't a guarantee
05/10 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/28 and only about 1 year in 10 sees frost after that.
Clymer against the rest of the dataset
Clymer's growing season runs about 155 days, ranking 34,029 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,791 of 2,088.
Learn more
Two guides worth reading on 15729: the frost range, on how to read the range around Clymer's dates instead of trusting one, and local microclimates, on what one yard in Clymer can differ from the 15729 normal.