Greenfield, OK 73043 Frost Dates
When can you plant in Greenfield, OK?
Typically, the last spring freeze lands around 04/14, roughly 229 days out. The first fall frost typically arrives around 10/27, about 194 frost-free days later.
Zone 7b (5 to 10°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Greenfield, not a forecast for this year.
What to do before the first frost
About 9 weeks of growing season left in Greenfield before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/14 isn't a guarantee
04/14 is the middle of 30 years of NOAA records, not a promise. Plant by 03/30 and you're betting against frost in roughly 9 years out of 10. 04/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Greenfield compares
About 194 days separate Greenfield's last and first frost, putting it 19,652 of 40,283 ZIP codes nationally. Within OK, it ranks 730 of 764.
Learn more
zone vs. frost date covers why Zone 7b and Greenfield's frost date answer different questions. the frost range covers how to read the range around Greenfield's dates instead of trusting one.