Walnut Grove, MS 39189 Frost Dates
39189, near Walnut Grove, MS: the frost window
The last spring frost here typically falls around 03/19, about 203 days from today. Fall's first freeze usually shows up around 11/07, roughly 233 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 Walnut Grove, not a forecast for this year.
Stretching the season past the first frost
Walnut Grove'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 03/19 isn't a guarantee
03/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/07 and only about 1 year in 10 sees frost after that.
Walnut Grove against the rest of the dataset
At roughly 233 frost-free days, Walnut Grove places 9,962 of 40,283 ZIP codes in this dataset. Within MS, it ranks 355 of 523.
Learn more
Two guides worth reading on 39189: zone vs. frost date, on why Zone 8b and Walnut Grove's frost date answer different questions, and the frost range, on how to read the range around Walnut Grove's dates instead of trusting one.