North Charleston, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

219
FXUS62 KCHS 221057
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
657 AM EDT Sun Mar 22 2026

.WHAT HAS CHANGED...
The Aviation Section has been updated for the 12Z TAF issuance.
All Key Messages and sections have been updated.

&&

.KEY MESSAGES...
- 1) Quiet weather and warming temperatures through Monday.

- 2) A strong backdoor cold front will yield breezy winds and
  cooler conditions mid-week.

&&

.DISCUSSION...
KEY MESSAGE 1: Quiet weather and warming temperatures through
Monday.

Sfc high pressure continues to prevail overhead through Monday
afternoon, keeping conditions quiet across our area. With the aid of
mostly sunny skies and southwesterly flow, will also see afternoon
highs remain roughly 10 degrees above normal. As a result, have
temperatures forecast to warm into the mid to upper 80s, with
perhaps a few locations across interior southeast Georgia taking a
shot at 90 degrees Monday.

KEY MESSAGE 2: A strong backdoor cold front will yield breezy winds
and cooler conditions mid-week.

A strong backdoor cold front will push through the region Monday
night/Tuesday morning, resulting in breezy winds and cooler
temperatures in it`s wake. While highs in the 60s to lower 70s
Tuesday and Wednesday may feel quite notable compared to days past,
these temperatures will actually push us closer to seasonal norms.
Precipitation with the aforementioned front looks to remain fairly
minimal, as PoPs remain capped near 30% Tuesday night and Wednesday.
Outside of this, the main concern with FROPA will be breezy winds,
with latest NBM probabilities of seeing gusts greater than 25 MPH
near 60-65% across our coastal counties. Otherwise, look above
normal temperatures to return by the end of the week as another high
pressure system builds overhead.

&&

.AVIATION /12Z SUNDAY THROUGH THURSDAY/...
VFR conditions will remain at KCHS, KJZI, and KSAV through 12Z
Monday. As temperatures peak during the early to mid afternoon,
mixing heights may increase to near 5 kft, yielding some gusts
in the low 20 kts from the SW. A weak sea breeze may cross the
terminals late this afternoon, with a slight wind shift from the
south. Gusts should end around sunset.

Extended Aviation Outlook: Prevailing VFR through Monday. A backdoor
cold front will push through the terminals Monday evening into
Tuesday morning bringing showers and thunderstorms. In the wake of
the front on Tuesday, winds will shift to the NE and gust 20 to 25
knots.

&&

.MARINE...
Today and Monday: High pressure should generally support southwest
winds between 10 to 15 kts with gusts around 20 kts. Wave heights
should range between 3-4 ft.

Guidance remain consistent with the overall timing and placement of
a backdoor cold front push across the marine zones late Monday. In
the wake the front, the pressure gradient is forecast to increase to
4-5 mbs Monday night into midday Tuesday. Winds across the Atlantic
waters, outside the Charleston Harbor, are forecast to turn from the
NE and strengthen to around gales during the pre-dawn hours Tuesday
morning. Gale gusts are possible until around midday Tuesday. A Gale
Watch could be needed for the SC and GA Atlantic waters. In
addition, wave heights are forecast to peak on Tuesday, ranging from
6-9 ft within 20 NM and 9-11 ft beyond 20 NM. Small Craft Advisory
conditions are forecast in the Charleston Harbor, with NE gusts of
25 knots.

On Wednesday, a ridge of high pressure should result in decreasing
winds across the coastal waters. As a result, wave heights should
gradually diminish, however, 6 ft seas may linger over the outer GA
waters into Wednesday. Conditions should continue to improve into
Thursday.

&&

.CLIMATE...
Record High Temperatures:

March 22:
KCHS: 88/2011

March 23:
KCHS: 87/1995

March 27:
KCHS: 87/2021
KCXM: 81/2021
KSAV: 89/2021

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...None.
MARINE...None.

&&

$$

NED/SST