Lamar, AR 72846 Frost Dates
72846, near Lamar, AR: the frost window
Around 03/25 is the usual last spring frost, about 209 days away. Fall's first freeze usually shows up around 11/10, roughly 232 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Lamar in Zone 8a (10 to 15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Lamar'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 Lamar's last frost
03/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/12 and only about 1 year in 10 sees frost after that.
Lamar against the rest of the dataset
Lamar's growing season runs about 232 days, ranking 10,056 of 40,283 US ZIP codes measured here, longest to shortest. Within AR, it ranks 209 of 687.
Learn more
Two guides worth reading on 72846: local microclimates, on what one yard in Lamar can differ from the 72846 normal, and zone vs. frost date, on why Zone 8a and Lamar's frost date answer different questions.