Lamar, AR 72839 Frost Dates
Lamar, AR: when does the frost end?
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 7b (5 to 10°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
With roughly 11 weeks until Lamar's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
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 10,055 of 40,283 US ZIP codes measured here, longest to shortest. Within AR, it ranks 208 of 687.
Learn more
Before leaning on 72839's figures: local microclimates explains what one yard in Lamar can differ from the 72839 normal, while zone vs. frost date explains why Zone 7b and Lamar's frost date answer different questions.