Natchez, MS 39121 Frost Dates
39121, near Natchez, MS: the frost window
The last spring frost here typically falls around 03/16, about 200 days from today. Fall's first freeze usually shows up around 11/09, roughly 237 days after the last spring frost.
Natchez 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
Natchez's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/16 isn't a guarantee
03/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/06 and only about 1 year in 10 sees frost after that.
Natchez against the rest of the dataset
Natchez's growing season runs about 237 days, ranking 9,081 of 40,283 US ZIP codes measured here, longest to shortest. Within MS, it ranks 290 of 523.
Learn more
Two guides worth reading on 39121: zone vs. frost date, on why Zone 8b and Natchez's frost date answer different questions, and the frost range, on how to read the range around Natchez's dates instead of trusting one.