Caledonia, MS 39746 Frost Dates
39746, near Caledonia, MS: the frost window
Typically, the last spring freeze lands around 03/29, roughly 213 days out. Fall's first freeze usually shows up around 11/05, roughly 223 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Caledonia in Zone 8a (10 to 15°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
Caledonia'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.
The actual range around Caledonia's last frost
03/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/08 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/14 and only about 1 year in 10 sees frost after that.
Caledonia against the rest of the dataset
At roughly 223 frost-free days, Caledonia places 12,097 of 40,283 ZIP codes in this dataset. Within MS, it ranks 419 of 523.
Learn more
Two guides worth reading on 39746: zone vs. frost date, on why Zone 8a and Caledonia's frost date answer different questions, and the frost range, on how to read the range around Caledonia's dates instead of trusting one.