Marion, MS 39304 Frost Dates
39304, near Marion, MS: the frost window
Typically, the last spring freeze lands around 03/16, roughly 200 days out. Fall's first freeze usually shows up around 11/12, roughly 239 days after the last spring frost.
Marion 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.
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
03/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/03 and only about 1 year in 10 sees frost after that.
Marion against the rest of the dataset
Marion's growing season runs about 239 days, ranking 8,845 of 40,283 US ZIP codes measured here, longest to shortest. Within MS, it ranks 266 of 523.
Learn more
Two guides worth reading on 39304: zone vs. frost date, on why Zone 8b and Marion's frost date answer different questions, and the frost range, on how to read the range around Marion's dates instead of trusting one.