Christiana, PA 17535 Frost Dates
When can you plant in Christiana, PA?
Around 04/16 is the usual last spring frost, about 231 days away. The first fall frost typically arrives around 10/27, about 193 frost-free days later.
The USDA Plant Hardiness Zone Map puts Christiana in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 9 weeks of growing season left in Christiana before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Christiana's last frost
04/16 is the middle of 30 years of NOAA records, not a promise. Plant by 04/03 and you're betting against frost in roughly 9 years out of 10. 04/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Christiana compares
About 193 days separate Christiana's last and first frost, putting it 19,993 of 40,283 ZIP codes nationally. Within PA, it ranks 497 of 2,088.
Learn more
the frost range covers how to read the range around Christiana's dates instead of trusting one. local microclimates covers what one yard in Christiana can differ from the 17535 normal.