Hattiesburg, MS 39402 Frost Dates
When can you plant in Hattiesburg, MS?
Around 03/07 is the usual last spring frost, about 191 days away. The first fall frost typically arrives around 11/23, about 261 frost-free days later.
The USDA Plant Hardiness Zone Map puts Hattiesburg in Zone 8b (15 to 20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 12 weeks of growing season left in Hattiesburg before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Hattiesburg's last frost
03/07 is the middle of 30 years of NOAA records, not a promise. Plant by 02/14 and you're betting against frost in roughly 9 years out of 10. 03/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hattiesburg compares
About 261 days separate Hattiesburg's last and first frost, putting it 6,269 of 40,283 ZIP codes nationally. Within MS, it ranks 50 of 523.
Learn more
the frost range covers how to read the range around Hattiesburg's dates instead of trusting one. local microclimates covers what one yard in Hattiesburg can differ from the 39402 normal.