Lilburn, GA 39901 Frost Dates
Frost dates for Lilburn, GA, ZIP 39901
Typically, the last spring freeze lands around 03/25, roughly 209 days out. The first fall frost typically arrives around 11/09, about 228 frost-free days later.
Lilburn sits in USDA Zone 8a (10 to 15°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
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.
How much risk comes with planting early here
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
At roughly 228 frost-free days, Lilburn places 10,767 of 40,283 ZIP codes in this dataset. Within GA, it ranks 623 of 921.
Learn more
local microclimates explains what one yard in Lilburn can differ from the 39901 normal, and zone vs. frost date explains why Zone 8a and Lilburn's frost date answer different questions.