North Charleston, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

756
FXUS62 KCHS 260612
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
212 AM EDT Sat Sep 26 2026

.WHAT HAS CHANGED...
All Key Messages and Sections were updated.

&&

.KEY MESSAGES...
- 1) Cool weather lingers this weekend. Near to slightly above
normal temperatures return next week.

- 2) The coastal flood risk will persist into early next week.

&&

.DISCUSSION...
KEY MESSAGE 1: Cool weather will linger into the weekend. Near
to slightly above normal temperatures return next week.

Quiet conditions continue to prevail across the region, as current
observations show calm winds and clear skies. Thus, with the aid of
efficient radiational cooling, have seen temperatures fall into mid
50s inland to lower 60s along the coast. These values will continue
to fall in the coming hours, with locations further inland possibly
dipping into the upper 40s prior to daybreak.

Temperatures moderate fairly quickly this afternoon as upper level
ridging builds aloft, allowing highs to warm into the upper 70s to
lower 80s, which is still a touch below normal for this time of
year. Otherwise, expect similar conditions to prevail this evening,
as light winds and clear skies yield another chilly night. However,
winds out of the south/southwest should help cap lows in the mid
50s.

Looking ahead into next week, will see broad upper level ridging and
sfc high pressure linger overhead, keeping conditions quiet across
our area. Temperatures will continue to moderate during this time,
with highs in the upper 80s to low 90s likely again by mid-week.
Moisture then increases Thursday into Friday along the backside of
subtropical high pressure centered well offshore over the Atlantic,
causing rain chances to return. Nonetheless, confidence remains too
low at this time to narrow in on any specifics.

KEY MESSAGE 2: The coastal flood risk will linger into early next
week.

Breezy north-northeasterly flow will continue across the region, as
a nor`easter churns offshore of the Mid-Atlantic coastline. This
combined with the recent full moon will result in minor (possibly
moderate) coastal flooding with each high tide cycle this weekend
(esp. for the Charleston Harbor).

Charleston Harbor: Coastal flooding concerns will continue today
(9/26) with the potential to reach moderate flood stage for
Charleston and Colleton County with the morning high tide (~8AM).
Thus, plan to issue a Coastal Flood Advisory with this forecast
package, which will be in effect from 6 AM until 10 AM. Thereafter,
it`s likely to see minor coastal flooding conditions through early
next week for the Charleston Harbor.

Fort Pulaski: Total water forecasts indicate this morning`s and
Sunday morning`s high tide could peak around 9.5 ft MLLW, which will
be close to yielding minor coastal flooding impacts across lower
South Carolina and southeast Georgia. Given the borderline nature,
will continue to monitor trends in the coming hours and issue a
Coastal Flood Advisory if warranted.

&&

.AVIATION /06Z SATURDAY THROUGH WEDNESDAY/...
06Z TAFs: VFR with light NNW winds through the TAF period.

Extended Aviation Outlook: VFR.

&&

.MARINE...
Today through Wednesday: Seas of 4-6 ft linger across the outer
Georgia waters today, where a Small Craft Advisory is currently in
effect. Should see seas wane heading into the evening, allowing
all headlines to expire. Otherwise, expect fairly quiet marine
conditions to dominate the coastal waters through the middle of
next week. Some localized sea breeze enhancements should return
across Charleston Harbor and the land/sea interface by Tuesday,
but wind speeds look to remain fairly tame.

Rip Currents: A lingering 10-12s backswell directed towards the
Georgia and Florida coasts will support a moderate rip current risk
from Tybee Island south to Sapelo Island both today and Sunday. A
low risk is anticipated for the lower South Carolina beaches both
days.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...Coastal Flood Advisory from 6 AM to 10 AM EDT this morning for
     SCZ149-150.
MARINE...Small Craft Advisory until 8 PM EDT this evening for AMZ384.

&&

$$

CPM/SST