Cressona, PA 17929 Frost Dates
17929, near Cressona, PA: the frost window
Around 04/30 is the usual last spring frost, about 245 days away. Fall's first freeze usually shows up around 10/22, roughly 175 days after the last spring frost.
Cressona sits in USDA Zone 7a (0 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
Cressona'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 Cressona's last frost
04/30 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 05/18 and only about 1 year in 10 sees frost after that.
Cressona against the rest of the dataset
About 175 days separate Cressona's last and first frost, putting it 27,023 of 40,283 ZIP codes nationally. Within PA, it ranks 1,190 of 2,088.
Learn more
Two guides worth reading on 17929: zone vs. frost date, on why Zone 7a and Cressona's frost date answer different questions, and the frost range, on how to read the range around Cressona's dates instead of trusting one.