McKees Rocks, PA 15233 Frost Dates
Frost dates for McKees Rocks, PA, ZIP 15233
Around 04/18 is the usual last spring frost, about 233 days away. The first fall frost typically arrives around 10/28, about 193 frost-free days later.
McKees Rocks sits in USDA Zone 7a (0 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
Zone 7a around McKees Rocks has about 9 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
04/18 is the middle of 30 years of NOAA records, not a promise. Plant by 04/02 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How McKees Rocks compares
About 193 days separate McKees Rocks's last and first frost, putting it 19,838 of 40,283 ZIP codes nationally. Within PA, it ranks 426 of 2,088.
Learn more
the frost range explains how to read the range around McKees Rocks's dates instead of trusting one, and local microclimates explains what one yard in McKees Rocks can differ from the 15233 normal.