Irwinton, GA 31042 Frost Dates
When can you plant in Irwinton, GA?
Around 03/12 is the usual last spring frost, about 196 days away. The first fall frost typically arrives around 11/19, about 255 frost-free days later.
Zone 8b (15 to 20°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 Irwinton, not a forecast for this year.
What to do before the first frost
About 12 weeks of growing season left in Irwinton before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Irwinton's last frost
03/12 is the middle of 30 years of NOAA records, not a promise. Plant by 02/18 and you're betting against frost in roughly 9 years out of 10. 04/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Irwinton compares
Irwinton's growing season runs about 255 days, ranking 6,963 of 40,283 US ZIP codes measured here, longest to shortest. Within GA, it ranks 202 of 921.
Learn more
local microclimates covers what one yard in Irwinton can differ from the 31042 normal. zone vs. frost date covers why Zone 8b and Irwinton's frost date answer different questions.