Palmerton, PA 18012 Frost Dates
18012, near Palmerton, PA: the frost window
Around 04/21 is the usual last spring frost, about 236 days away. Fall's first freeze usually shows up around 10/23, roughly 184 days after the last spring frost.
Palmerton 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
Palmerton'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 Palmerton's last frost
04/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/09 and only about 1 year in 10 sees frost after that.
Palmerton against the rest of the dataset
About 184 days separate Palmerton's last and first frost, putting it 23,493 of 40,283 ZIP codes nationally. Within PA, it ranks 772 of 2,088.
Learn more
Two guides worth reading on 18012: the frost range, on how to read the range around Palmerton's dates instead of trusting one, and local microclimates, on what one yard in Palmerton can differ from the 18012 normal.