Frost Dates for Slidell, LA
In Slidell, LA, the average last spring frost is around Feb 24 and the average first fall frost around Dec 1, for a growing season of about 281 days. For frost-tender plants, wait until Mar 19, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Slidell, LA weather station, 2 miles away, elevation 10 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% | Mar 19 | Nov 9 |
| 20% | Mar 12 | Nov 15 |
| 30% | Mar 5 | Nov 20 |
| 40% | Feb 28 | Nov 26 |
| 50% | Feb 24 | Dec 1 |
| 60% | Feb 20 | Dec 5 |
| 70% | Feb 14 | Dec 12 |
| 80% | Feb 6 | Dec 25 |
| 90% | Jan 29 | Jan 3 |
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) | Mar 12 | Nov 16 |
| Frost / freeze (32°F) | Feb 24 | Dec 1 |
| Hard freeze (28°F) | Feb 4 | Dec 26 |
Planting calendar for Slidell
Transplant Mar 3 – Mar 17
Transplant Mar 10 – Mar 24
Transplant Mar 10 – Mar 24
Transplant Mar 3 – Mar 17
Sow or transplant Mar 3 – Mar 17
Sow or transplant Mar 3 – Mar 17
Sow or transplant Mar 10 – Mar 24
Sow or transplant Jan 27 – Feb 10
Fall sowing Oct 6 – Nov 3
Fall sowing Oct 6 – Oct 27
Fall sowing Sep 22 – Oct 6
Sow or transplant Jan 27 – Feb 10
Fall sowing Sep 22 – Oct 20
Transplant Feb 10 – Feb 24
Fall sowing Sep 8 – Sep 22
Transplant Feb 3 – Feb 17
Fall sowing Sep 8 – Sep 22
Fall sowing Sep 8 – Sep 22
Fall sowing Oct 20 – Nov 10
Fall sowing Sep 22 – Oct 6
Plant Jan 27 – Feb 10
Based on the average last frost (Feb 24) and first frost (Dec 1). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.