Lilburn, GA 30047 Frost Dates
Frost dates for Lilburn, GA, ZIP 30047
Around 03/25 is the usual last spring frost, about 209 days away. The first fall frost typically arrives around 11/09, about 228 frost-free days later.
Zone 8a (10 to 15°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 Lilburn, not a forecast for this year.
What to do before the first frost
Zone 8a around Lilburn has about 10 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 03/25 isn't a guarantee
03/25 is the middle of 30 years of NOAA records, not a promise. Plant by 03/05 and you're betting against frost in roughly 9 years out of 10. 04/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Lilburn compares
Lilburn's growing season runs about 228 days, ranking 10,754 of 40,283 US ZIP codes measured here, longest to shortest. Within GA, it ranks 610 of 921.
Learn more
local microclimates explains what one yard in Lilburn can differ from the 30047 normal, and zone vs. frost date explains why Zone 8a and Lilburn's frost date answer different questions.