Last frost date in Mount Pleasant, SC

Average last frost
March 13

In Mount Pleasant, the last spring frost comes around March 13 in an average year. Wait until March 30 if you want 90% odds of no more frost. The first fall frost usually arrives about November 30, which leaves 262 frost-free days. An early freeze before November 11 happens one year in ten.

Safe after (10% risk)
Mar 30
Average first frost
Nov 30
Frost-free season
262 days
Hard freeze (28°F) ends
Mar 1
Next 7 nights in Mount Pleasant

No frost in the next 7 nights

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

  1. ThuOct 2251°
  2. FriOct 2353°
  3. SatOct 2453°
  4. SunOct 2553°
  5. MonOct 2652°
  6. TueOct 2754°
  7. WedOct 2855°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost Mar 13First frost Nov 30262 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND262 frost-free days
Frost risk through the year at Sullivans Is, 3.3 miles from Mount Pleasant.

Planting calendar for Mount Pleasant

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

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
Warm-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
TomatoesMar 20–Apr 3
PumpkinsMar 27–Apr 10
SunflowersMar 13–Apr 3
CucumbersMar 27–Apr 3
CornMar 20–Apr 3
Sweet potatoesApr 3–Apr 17
WatermelonMar 27–Apr 10
Green beansMar 20–Apr 10
ZucchiniMar 20–Apr 3
OkraApr 3–Apr 17
PeppersMar 27–Apr 10
BasilMar 20–Apr 3
Butternut squashMar 20–Apr 3
CantaloupeMar 27–Apr 10
EggplantMar 27–Apr 10
Cool-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
PotatoesFeb 13–Feb 27
OnionsJan 30–Feb 20
CarrotsFeb 20–Mar 27
LettuceFeb 27–Mar 20
BroccoliFeb 13–Feb 27
BeetsFeb 13–Mar 27
PeasJan 30–Feb 13
CabbageFeb 13–Feb 27
RadishesFeb 6–Mar 20
Brussels sproutsFeb 27–Mar 13
SpinachJan 30–Feb 20
CilantroFeb 27–Mar 20
KaleFeb 13–Feb 27
Collard greensFeb 13–Feb 27
TurnipsFeb 13–Feb 27
DillMar 13–Mar 27
CeleryMar 20–Mar 27
CauliflowerFeb 27–Mar 13
LeeksFeb 27–Mar 13
Swiss chardFeb 27–Mar 27
ParsleyFeb 27–Mar 20
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsNov 16–Dec 15
GarlicOct 15–Nov 30
Daffodil bulbsOct 15–Nov 30
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesFeb 13–Feb 27
AsparagusFeb 13–Feb 27

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FFeb 19Mar 13Mar 30Nov 11Nov 30Dec 24
Hard freeze, 28°FFeb 1Mar 1Mar 22Nov 25Dec 16Jan 10

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 Sullivans Is (USC00388405) sits 3.3 miles from the center of Mount Pleasant at 5 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 Mount Pleasant, SC?

The average last frost date in Mount Pleasant is March 13, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after March 30.

When is the first frost in Mount Pleasant?

The first frost in fall usually comes around November 30. One year in ten it arrives before November 11.

How long is the growing season in Mount Pleasant?

About 262 days between the average last and first frost.

When should I plant tomatoes in Mount Pleasant?

Plant tomato seedlings outside from March 20 to April 3. Start seeds indoors six to eight weeks earlier.

Nearby in South Carolina

All 33 cities in South Carolina