Big Flat, AR 72639 Frost Dates
Frost dates for Big Flat, AR, ZIP 72639
The last spring frost here typically falls around 04/11, about 226 days from today. The first fall frost typically arrives around 10/26, about 197 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 Big Flat, not a forecast for this year.
What to do before the first frost
Zone 7b around Big Flat has about 8 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 Big Flat's last frost
04/11 is the middle of 30 years of NOAA records, not a promise. Plant by 03/25 and you're betting against frost in roughly 9 years out of 10. 04/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Big Flat compares
At roughly 197 frost-free days, Big Flat places 18,857 of 40,283 ZIP codes in this dataset. Within AR, it ranks 629 of 687.
Learn more
local microclimates explains what one yard in Big Flat can differ from the 72639 normal, and zone vs. frost date explains why Zone 7b and Big Flat's frost date answer different questions.