Tylertown, MS 39643 Frost Dates
39643, near Tylertown, MS: the frost window
Around 03/15 is the usual last spring frost, about 199 days away. Fall's first freeze usually shows up around 11/16, roughly 245 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Tylertown 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
Tylertown'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 03/15 isn't a guarantee
03/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/08 and only about 1 year in 10 sees frost after that.
Tylertown against the rest of the dataset
At roughly 245 frost-free days, Tylertown places 8,037 of 40,283 ZIP codes in this dataset. Within MS, it ranks 191 of 523.
Learn more
Two guides worth reading on 39643: local microclimates, on what one yard in Tylertown can differ from the 39643 normal, and zone vs. frost date, on why Zone 8b and Tylertown's frost date answer different questions.