Jackson, MS 39202 Frost Dates
39202, near Jackson, MS: the frost window
Typically, the last spring freeze lands around 03/06, roughly 190 days out. Fall's first freeze usually shows up around 11/19, roughly 258 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Jackson in Zone 8b (15 to 20°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
Jackson's growing season runs out in roughly 12 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/06 isn't a guarantee
03/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/24 and only about 1 year in 10 sees frost after that.
Jackson against the rest of the dataset
At roughly 258 frost-free days, Jackson places 6,621 of 40,283 ZIP codes in this dataset. Within MS, it ranks 72 of 523.
Learn more
Two guides worth reading on 39202: local microclimates, on what one yard in Jackson can differ from the 39202 normal, and zone vs. frost date, on why Zone 8b and Jackson's frost date answer different questions.