Burlington, PA 18817 Frost Dates
When can you plant in Burlington, PA?
Around 05/06 is the usual last spring frost, about 251 days away. The first fall frost typically arrives around 10/10, about 157 frost-free days later.
Zone 6a (-10 to -5°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 Burlington, not a forecast for this year.
What to do before the first frost
About 6 weeks of growing season left in Burlington before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Burlington's last frost
05/06 is the middle of 30 years of NOAA records, not a promise. Plant by 04/22 and you're betting against frost in roughly 9 years out of 10. 05/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Burlington compares
At roughly 157 frost-free days, Burlington places 33,459 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,763 of 2,088.
Learn more
the frost range covers how to read the range around Burlington's dates instead of trusting one. local microclimates covers what one yard in Burlington can differ from the 18817 normal.