Altus, AR 72821 Frost Dates
Frost dates for Altus, AR, ZIP 72821
The last spring frost here typically falls around 03/28, about 212 days from today. The first fall frost typically arrives around 11/05, about 223 frost-free days later.
Zone 8a (10 to 15°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 Altus, not a forecast for this year.
What to do before the first frost
Zone 8a around Altus has about 10 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 Altus's last frost
03/28 is the middle of 30 years of NOAA records, not a promise. Plant by 03/08 and you're betting against frost in roughly 9 years out of 10. 04/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Altus compares
At roughly 223 frost-free days, Altus places 12,104 of 40,283 ZIP codes in this dataset. Within AR, it ranks 376 of 687.
Learn more
local microclimates explains what one yard in Altus can differ from the 72821 normal, and zone vs. frost date explains why Zone 8a and Altus's frost date answer different questions.