Last frost date in Sulphur, LA

Average last frost
February 14

Expect the last frost in Sulphur around February 14. Frost after March 11 happens in only one year out of ten. The first fall frost usually arrives about December 7, which leaves 299 frost-free days. An early freeze before November 14 happens one year in ten.

Safe after (10% risk)
Mar 11
Average first frost
Dec 7
Frost-free season
299 days
Hard freeze (28°F) ends
Jan 27
Next 7 nights in Sulphur

No frost in the next 7 nights

National Weather Service forecast, updated Oct 22, 12:57 UTC

  1. ThuOct 2255°
  2. FriOct 2356°
  3. SatOct 2455°
  4. SunOct 2558°
  5. MonOct 2657°
  6. TueOct 2758°
  7. WedOct 2857°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost Feb 14First frost Dec 7299 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND299 frost-free days
Frost risk through the year at Lake Charles, 11.1 miles from Sulphur.

Planting calendar for Sulphur

Windows count forward or back from the average frost dates above. Click a crop for dates across Louisiana.

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
Warm-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
TomatoesFeb 21–Mar 7
PumpkinsFeb 28–Mar 14
SunflowersFeb 15–Mar 8
CucumbersFeb 28–Mar 7
CornFeb 21–Mar 7
Sweet potatoesMar 7–Mar 21
WatermelonFeb 28–Mar 14
Green beansFeb 21–Mar 14
ZucchiniFeb 21–Mar 7
OkraMar 7–Mar 21
PeppersFeb 28–Mar 14
BasilFeb 21–Mar 7
Butternut squashFeb 21–Mar 7
CantaloupeFeb 28–Mar 14
EggplantFeb 28–Mar 14
Cool-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
PotatoesJan 17–Jan 31
OnionsJan 3–Jan 24
CarrotsJan 24–Feb 28
LettuceJan 31–Feb 21
BroccoliJan 17–Jan 31
BeetsJan 17–Feb 28
PeasJan 3–Jan 17
CabbageJan 17–Jan 31
RadishesJan 10–Feb 21
Brussels sproutsJan 31–Feb 14
SpinachJan 3–Jan 24
CilantroJan 31–Feb 21
KaleJan 17–Jan 31
Collard greensJan 17–Jan 31
TurnipsJan 17–Jan 31
DillFeb 14–Feb 28
CeleryFeb 21–Feb 28
CauliflowerJan 31–Feb 14
LeeksJan 31–Feb 14
Swiss chardJan 31–Feb 28
ParsleyJan 31–Feb 21
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsDec 15–Jan 15
GarlicOct 15–Nov 30
Daffodil bulbsOct 15–Nov 30
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesJan 17–Jan 31
AsparagusJan 17–Jan 31

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FJan 16Feb 14Mar 11Nov 14Dec 7Jan 7
Hard freeze, 28°FDec 31Jan 27Feb 28Dec 3Jan 3Feb 1

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 Lake Charles (USW00003937) sits 11.1 miles from the center of Sulphur at 13 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 Sulphur, LA?

The average last frost date in Sulphur is February 14, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after March 11.

When is the first frost in Sulphur?

The first frost in fall usually comes around December 7. One year in ten it arrives before November 14.

How long is the growing season in Sulphur?

About 299 days between the average last and first frost.

When should I plant tomatoes in Sulphur?

Plant tomato seedlings outside from February 21 to March 7. Start seeds indoors six to eight weeks earlier.

Nearby in Louisiana

All 26 cities in Louisiana