McKeesport, PA 15132 Frost Dates
When can you plant in McKeesport, PA?
Around 05/02 is the usual last spring frost, about 247 days away. The first fall frost typically arrives around 10/20, about 170 frost-free days later.
McKeesport 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.
What to do before the first frost
About 8 weeks of growing season left in McKeesport before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
05/02 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How McKeesport compares
At roughly 170 frost-free days, McKeesport places 28,935 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,458 of 2,088.
Learn more
local microclimates covers what one yard in McKeesport can differ from the 15132 normal. zone vs. frost date covers why Zone 6b and McKeesport's frost date answer different questions.