Danville, PA 17821 Frost Dates
Danville, PA: when does the frost end?
Typically, the last spring freeze lands around 04/30, roughly 245 days out. Fall's first freeze usually shows up around 10/13, roughly 166 days after the last spring frost.
Danville sits in USDA Zone 6b (-5 to 0°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 7 weeks until Danville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Danville's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 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.
Danville against the rest of the dataset
Danville's growing season runs about 166 days, ranking 30,367 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,530 of 2,088.
Learn more
Before leaning on 17821's figures: local microclimates explains what one yard in Danville can differ from the 17821 normal, while zone vs. frost date explains why Zone 6b and Danville's frost date answer different questions.