Madison, GA 30650 Frost Dates
30650, near Madison, GA: the frost window
Around 03/24 is the usual last spring frost, about 208 days away. Fall's first freeze usually shows up around 11/12, roughly 234 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Madison 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
Madison'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 03/24 isn't a guarantee
03/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/12 and only about 1 year in 10 sees frost after that.
Madison against the rest of the dataset
About 234 days separate Madison's last and first frost, putting it 9,732 of 40,283 ZIP codes nationally. Within GA, it ranks 437 of 921.
Learn more
Two guides worth reading on 30650: zone vs. frost date, on why Zone 8a and Madison's frost date answer different questions, and the frost range, on how to read the range around Madison's dates instead of trusting one.