Avis, PA 17779 Frost Dates
17779, near Avis, PA: the frost window
Around 04/25 is the usual last spring frost, about 240 days away. Fall's first freeze usually shows up around 10/19, roughly 175 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Avis 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
Avis's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/25 isn't a guarantee
04/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/11 and only about 1 year in 10 sees frost after that.
Avis against the rest of the dataset
Avis's growing season runs about 175 days, ranking 27,040 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,199 of 2,088.
Learn more
Two guides worth reading on 17779: the frost range, on how to read the range around Avis's dates instead of trusting one, and local microclimates, on what one yard in Avis can differ from the 17779 normal.