Byram, MS 39212 Frost Dates
When can you plant in Byram, MS?
The last spring frost here typically falls around 03/06, about 190 days from today. The first fall frost typically arrives around 11/19, about 258 frost-free days later.
Byram sits in USDA Zone 8b (15 to 20°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.
What to do before the first frost
About 12 weeks of growing season left in Byram before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Byram's last frost
03/06 is the middle of 30 years of NOAA records, not a promise. Plant by 02/15 and you're betting against frost in roughly 9 years out of 10. 03/24 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Byram compares
About 258 days separate Byram's last and first frost, putting it 6,633 of 40,283 ZIP codes nationally. Within MS, it ranks 83 of 523.
Learn more
local microclimates covers what one yard in Byram can differ from the 39212 normal. zone vs. frost date covers why Zone 8b and Byram's frost date answer different questions.