Thunderbolt, GA 31401 Frost Dates
When can you plant in Thunderbolt, GA?
Around 03/02 is the usual last spring frost, about 186 days away. The first fall frost typically arrives around 11/30, about 270 frost-free days later.
The USDA Plant Hardiness Zone Map puts Thunderbolt in Zone 9a (20 to 25°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 13 weeks of growing season left in Thunderbolt before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/02 isn't a guarantee
03/02 is the middle of 30 years of NOAA records, not a promise. Plant by 02/04 and you're betting against frost in roughly 9 years out of 10. 03/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Thunderbolt compares
Thunderbolt's growing season runs about 270 days, ranking 5,588 of 40,283 US ZIP codes measured here, longest to shortest. Within GA, it ranks 43 of 921.
Learn more
zone vs. frost date covers why Zone 9a and Thunderbolt's frost date answer different questions. the frost range covers how to read the range around Thunderbolt's dates instead of trusting one.