Greencastle, PA 17263 Frost Dates
Greencastle, PA: when does the frost end?
The last spring frost here typically falls around 04/07, about 222 days from today. Fall's first freeze usually shows up around 11/04, roughly 209 days after the last spring frost.
Greencastle sits in USDA Zone 7b (5 to 10°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
With roughly 10 weeks until Greencastle's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Greencastle's last frost
04/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/21 and only about 1 year in 10 sees frost after that.
Greencastle against the rest of the dataset
At roughly 209 frost-free days, Greencastle places 15,231 of 40,283 ZIP codes in this dataset. Within PA, it ranks 87 of 2,088.
Learn more
Before leaning on 17263's figures: local microclimates explains what one yard in Greencastle can differ from the 17263 normal, while zone vs. frost date explains why Zone 7b and Greencastle's frost date answer different questions.