Frost Dates for Smyrna, GA
In Smyrna, GA, the average last spring frost is around Mar 27 and the average first fall frost around Nov 7, for a growing season of about 225 days. For frost-tender plants, wait until Apr 12, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Mableton 1 N, GA weather station, 4 miles away, elevation 980 ft. Frost can come earlier in low spots and valleys and later near cities and large lakes.
Frost probability by date
Chance of a 32°F frost after the spring date, or before the fall date.
| Chance | Last spring frost | First fall frost |
|---|---|---|
| 10% | Apr 12 | Oct 27 |
| 20% | Apr 7 | Oct 31 |
| 30% | Apr 3 | Nov 3 |
| 40% | Mar 31 | Nov 5 |
| 50% | Mar 27 | Nov 7 |
| 60% | Mar 23 | Nov 10 |
| 70% | Mar 19 | Nov 14 |
| 80% | Mar 16 | Nov 19 |
| 90% | Mar 9 | Nov 26 |
Light frost vs. hard freeze
Average (50%) dates for each temperature. Tender plants are damaged at 36°F; most hardy crops survive until 28°F.
| Temperature | Last in spring | First in fall |
|---|---|---|
| Light frost (36°F) | Apr 8 | Oct 30 |
| Frost / freeze (32°F) | Mar 27 | Nov 7 |
| Hard freeze (28°F) | Mar 14 | Nov 19 |
Planting calendar for Smyrna
Transplant Apr 3 – Apr 17
Transplant Apr 10 – Apr 24
Transplant Apr 10 – Apr 24
Transplant Apr 3 – Apr 17
Sow or transplant Apr 3 – Apr 17
Sow or transplant Apr 3 – Apr 17
Sow or transplant Apr 10 – Apr 24
Sow or transplant Feb 27 – Mar 13
Fall sowing Sep 12 – Oct 10
Fall sowing Sep 12 – Oct 3
Fall sowing Aug 29 – Sep 12
Sow or transplant Feb 27 – Mar 13
Fall sowing Aug 29 – Sep 26
Transplant Mar 13 – Mar 27
Fall sowing Aug 15 – Aug 29
Transplant Mar 6 – Mar 20
Fall sowing Aug 15 – Aug 29
Fall sowing Aug 15 – Aug 29
Fall sowing Sep 26 – Oct 17
Fall sowing Aug 29 – Sep 12
Plant Feb 27 – Mar 13
Based on the average last frost (Mar 27) and first frost (Nov 7). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.