Marion, MS 39326 Frost Dates
39326, near Marion, MS: the frost window
Typically, the last spring freeze lands around 03/14, roughly 198 days out. Fall's first freeze usually shows up around 11/12, roughly 245 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.
Why 03/14 isn't a guarantee
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
Marion's growing season runs about 245 days, ranking 8,034 of 40,283 US ZIP codes measured here, longest to shortest. Within MS, it ranks 188 of 523.
Learn more
Two guides worth reading on 39326: the frost range, on how to read the range around Marion's dates instead of trusting one, and local microclimates, on what one yard in Marion can differ from the 39326 normal.