Last frost date in Slidell, LA
In Slidell, the last spring frost comes around February 24 in an average year. Wait until March 19 if you want 90% odds of no more frost. The first fall frost usually arrives about December 1, which leaves 281 frost-free days. An early freeze before November 9 happens one year in ten.
- Safe after (10% risk)
- Mar 19
- Average first frost
- Dec 1
- Frost-free season
- 281 days
- Hard freeze (28°F) ends
- Feb 4
No frost in the next 7 nights
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2250°
- FriOct 2351°
- SatOct 2451°
- SunOct 2552°
- MonOct 2653°
- TueOct 2753°
- WedOct 2852°
Planting calendar for Slidell
Windows count forward or back from the average frost dates above. Click a crop for dates across Louisiana.
TomatoesMar 3–Mar 17
PumpkinsMar 10–Mar 24
SunflowersFeb 24–Mar 17
CucumbersMar 10–Mar 17
CornMar 3–Mar 17
Sweet potatoesMar 17–Mar 31
WatermelonMar 10–Mar 24
Green beansMar 3–Mar 24
ZucchiniMar 3–Mar 17
OkraMar 17–Mar 31
PeppersMar 10–Mar 24
BasilMar 3–Mar 17
Butternut squashMar 3–Mar 17
CantaloupeMar 10–Mar 24
EggplantMar 10–Mar 24
PotatoesJan 27–Feb 10
OnionsJan 13–Feb 3
CarrotsFeb 3–Mar 10
LettuceFeb 10–Mar 3
BroccoliJan 27–Feb 10
BeetsJan 27–Mar 10
PeasJan 13–Jan 27
CabbageJan 27–Feb 10
RadishesJan 20–Mar 3
Brussels sproutsFeb 10–Feb 24
SpinachJan 13–Feb 3
CilantroFeb 10–Mar 3
KaleJan 27–Feb 10
Collard greensJan 27–Feb 10
TurnipsJan 27–Feb 10
DillFeb 24–Mar 10
CeleryMar 3–Mar 10
CauliflowerFeb 10–Feb 24
LeeksFeb 10–Feb 24
Swiss chardFeb 10–Mar 10
ParsleyFeb 10–Mar 3
Tulip bulbsNov 17–Dec 15
GarlicOct 15–Nov 30
Daffodil bulbsOct 15–Nov 30
StrawberriesJan 27–Feb 10
AsparagusJan 27–Feb 10Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Jan 29 | Feb 24 | Mar 19 | Nov 9 | Dec 1 | Jan 3 |
| Hard freeze, 28°F | Jan 4 | Feb 4 | Mar 6 | Nov 26 | Dec 26 | Jan 26 |
Read the spring 10% column as the date after which only one year in ten still gets frost. That is the safer date for tomatoes, peppers and basil.
Where these numbers come from
NOAA station Slidell (USC00168539) sits 1.8 miles from the center of Slidell at 10 feet. Its averages cover 1991 to 2020. Low spots, valleys and open fields can keep getting frost a week or two after the station stops; city centers and lakeshores usually get less of it.
Questions
When is the last frost in Slidell, LA?
The average last frost date in Slidell is February 24, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after March 19.
When is the first frost in Slidell?
The first frost in fall usually comes around December 1. One year in ten it arrives before November 9.
How long is the growing season in Slidell?
About 281 days between the average last and first frost.
When should I plant tomatoes in Slidell?
Plant tomato seedlings outside from March 3 to March 17. Start seeds indoors six to eight weeks earlier.
Nearby in Louisiana
- New OrleansJan 22
- ChalmetteFeb 10
- TerrytownFeb 1
- MetairieJan 30
- HarveyFeb 1
- KennerJan 30
- MarreroJan 24
- HammondMar 8
- LaplaceFeb 9
- PrairievilleFeb 9
- Bayou CaneFeb 5
- HoumaFeb 5