Butler, PA 16002 Frost Dates
When can you plant in Butler, PA?
Around 04/16 is the usual last spring frost, about 231 days away. The first fall frost typically arrives around 11/02, about 199 frost-free days later.
Butler sits in USDA Zone 6a (-10 to -5°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.
What to do before the first frost
About 9 weeks of growing season left in Butler before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Butler's last frost
04/16 is the middle of 30 years of NOAA records, not a promise. Plant by 03/31 and you're betting against frost in roughly 9 years out of 10. 05/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Butler compares
At roughly 199 frost-free days, Butler places 18,054 of 40,283 ZIP codes in this dataset. Within PA, it ranks 283 of 2,088.
Learn more
the frost range covers how to read the range around Butler's dates instead of trusting one. local microclimates covers what one yard in Butler can differ from the 16002 normal.