Narberth, PA 19127 Frost Dates
19127, near Narberth, PA: the frost window
The last spring frost here typically falls around 04/08, about 223 days from today. Fall's first freeze usually shows up around 10/31, roughly 203 days after the last spring frost.
Zone 7b (5 to 10°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Narberth, not a forecast for this year.
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
At roughly 203 frost-free days, Narberth places 16,912 of 40,283 ZIP codes in this dataset. Within PA, it ranks 208 of 2,088.
Learn more
Two guides worth reading on 19127: local microclimates, on what one yard in Narberth can differ from the 19127 normal, and zone vs. frost date, on why Zone 7b and Narberth's frost date answer different questions.