Narberth, PA 19035 Frost Dates
19035, near Narberth, PA: the frost window
Around 04/08 is the usual last spring frost, about 223 days away. Fall's first freeze usually shows up around 10/31, roughly 203 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Narberth in Zone 7b (5 to 10°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
Narberth's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/23 and only about 1 year in 10 sees frost after that.
Narberth against the rest of the dataset
Narberth's growing season runs about 203 days, ranking 16,907 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 203 of 2,088.
Learn more
Two guides worth reading on 19035: the frost range, on how to read the range around Narberth's dates instead of trusting one, and local microclimates, on what one yard in Narberth can differ from the 19035 normal.