Brinkley, AR 72021 Frost Dates
72021, near Brinkley, AR: the frost window
Typically, the last spring freeze lands around 03/18, roughly 202 days out. Fall's first freeze usually shows up around 11/11, roughly 237 days after the last spring frost.
Brinkley sits in USDA Zone 8a (10 to 15°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.
Stretching the season past the first frost
Brinkley's growing season runs out in roughly 11 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Brinkley's last frost
03/18 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/06 and only about 1 year in 10 sees frost after that.
Brinkley against the rest of the dataset
About 237 days separate Brinkley's last and first frost, putting it 9,118 of 40,283 ZIP codes nationally. Within AR, it ranks 127 of 687.
Learn more
Two guides worth reading on 72021: local microclimates, on what one yard in Brinkley can differ from the 72021 normal, and zone vs. frost date, on why Zone 8a and Brinkley's frost date answer different questions.