Cornish, OK 73561 Frost Dates
Frost dates for Cornish, OK, ZIP 73561
Typically, the last spring freeze lands around 03/24, roughly 208 days out. The first fall frost typically arrives around 11/08, about 229 frost-free days later.
Cornish sits in USDA Zone 8a (10 to 15°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 8a around Cornish has about 10 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.
The actual range around Cornish's last frost
03/24 is the middle of 30 years of NOAA records, not a promise. Plant by 03/05 and you're betting against frost in roughly 9 years out of 10. 04/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Cornish compares
Cornish's growing season runs about 229 days, ranking 10,675 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 50 of 764.
Learn more
the frost range explains how to read the range around Cornish's dates instead of trusting one, and local microclimates explains what one yard in Cornish can differ from the 73561 normal.