Headrick, OK 73549 Frost Dates
73549, near Headrick, OK: the frost window
Typically, the last spring freeze lands around 04/03, roughly 218 days out. Fall's first freeze usually shows up around 11/04, roughly 214 days after the last spring frost.
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 Headrick, not a forecast for this year.
Stretching the season past the first frost
Headrick's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/03 isn't a guarantee
04/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/21 and only about 1 year in 10 sees frost after that.
Headrick against the rest of the dataset
About 214 days separate Headrick's last and first frost, putting it 14,395 of 40,283 ZIP codes nationally. Within OK, it ranks 386 of 764.
Learn more
Two guides worth reading on 73549: local microclimates, on what one yard in Headrick can differ from the 73549 normal, and zone vs. frost date, on why Zone 7b and Headrick's frost date answer different questions.