Jackson, MS 39209 Frost Dates
Frost dates for Jackson, MS, ZIP 39209
Around 03/06 is the usual last spring frost, about 190 days away. The first fall frost typically arrives around 11/19, about 258 frost-free days later.
Jackson 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
Zone 8b around Jackson has about 12 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
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 Jackson compares
At roughly 258 frost-free days, Jackson places 6,624 of 40,283 ZIP codes in this dataset. Within MS, it ranks 75 of 523.
Learn more
the frost range explains how to read the range around Jackson's dates instead of trusting one, and local microclimates explains what one yard in Jackson can differ from the 39209 normal.