Milford, PA 12770 Frost Dates
12770, near Milford, PA: the frost window
The last spring frost here typically falls around 05/05, about 250 days from today. Fall's first freeze usually shows up around 10/10, roughly 158 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Milford in Zone 6a (-10 to -5°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
Milford's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/05 isn't a guarantee
05/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/19 and only about 1 year in 10 sees frost after that.
Milford against the rest of the dataset
At roughly 158 frost-free days, Milford places 33,058 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,746 of 2,088.
Learn more
Two guides worth reading on 12770: local microclimates, on what one yard in Milford can differ from the 12770 normal, and zone vs. frost date, on why Zone 6a and Milford's frost date answer different questions.