Marion, MS 39335 Frost Dates
39335, near Marion, MS: the frost window
Around 03/14 is the usual last spring frost, about 198 days away. Fall's first freeze usually shows up around 11/12, roughly 245 days after the last spring frost.
Zone 8b (15 to 20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Marion, not a forecast for this year.
Stretching the season past the first frost
Marion's growing season runs out in roughly 11 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Marion's last frost
03/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/01 and only about 1 year in 10 sees frost after that.
Marion against the rest of the dataset
About 245 days separate Marion's last and first frost, putting it 8,035 of 40,283 ZIP codes nationally. Within MS, it ranks 189 of 523.
Learn more
Two guides worth reading on 39335: local microclimates, on what one yard in Marion can differ from the 39335 normal, and zone vs. frost date, on why Zone 8b and Marion's frost date answer different questions.