Heavener, OK 74937 Frost Dates
When can you plant in Heavener, OK?
Around 04/06 is the usual last spring frost, about 221 days away. The first fall frost typically arrives around 11/02, about 210 frost-free days later.
Heavener sits in USDA Zone 7b (5 to 10°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 9 weeks of growing season left in Heavener before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Heavener's last frost
04/06 is the middle of 30 years of NOAA records, not a promise. Plant by 03/18 and you're betting against frost in roughly 9 years out of 10. 04/24 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Heavener compares
At roughly 210 frost-free days, Heavener places 15,018 of 40,283 ZIP codes in this dataset. Within OK, it ranks 467 of 764.
Learn more
zone vs. frost date covers why Zone 7b and Heavener's frost date answer different questions. the frost range covers how to read the range around Heavener's dates instead of trusting one.