Frost dates for Charleston

◇ Station-based · 88/100 confidence

Last spring frost · safe

May 4

~10% frost risk · typical Apr 16

First fall frost · safe

Oct 9

~10% frost risk · typical Oct 21

Frost-free days

186

Apr 16 → Oct 21

Climate zone

Humid subtropical

Köppen Cfa

The growing year

Frost-bounded season with crops mapped onto the 12-month axis.

Frost risk Growing Harvest

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

FROST

GROWING SEASON — 186 DAYS

APR 16

OCT 21