Copan, OK 74022 Frost Dates
When can you plant in Copan, OK?
The last spring frost here typically falls around 04/12, about 227 days from today. The first fall frost typically arrives around 10/21, about 192 frost-free days later.
The USDA Plant Hardiness Zone Map puts Copan in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 8 weeks of growing season left in Copan 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
04/12 is the middle of 30 years of NOAA records, not a promise. Plant by 03/28 and you're betting against frost in roughly 9 years out of 10. 04/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Copan compares
About 192 days separate Copan's last and first frost, putting it 20,499 of 40,283 ZIP codes nationally. Within OK, it ranks 735 of 764.
Learn more
zone vs. frost date covers why Zone 7a and Copan's frost date answer different questions. the frost range covers how to read the range around Copan's dates instead of trusting one.