North Charleston, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

800
FXUS62 KCHS 272319
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
619 PM EST Thu Nov 27 2025

.SYNOPSIS...
High pressure will prevail through the weekend. A low pressure
system could impact the area early next week.

&&

.NEAR TERM /UNTIL 6 AM FRIDAY MORNING/...
Early this evening: Satellite imagery shows that the feed of
cirrus continues to scoot by offshore leaving the forecast area
under clear skies. High pressure remains centered to the west,
leaving the area under the pressure gradient of its eastern
periphery. This will be enough gradient to maintain 4-8 mph of
northwest flow at least through the early morning hours. As
sunrise Friday approaches, the gradient should relax enough to
allow for improving radiational cooling conditions. The result
is expected to be a widespread freeze away from the immediate
coast and inland of HW-17 upper 20s should be common.

&&

.SHORT TERM /6 AM FRIDAY MORNING THROUGH SUNDAY/...
Friday and Saturday: Aloft, a large mid-upper lvl trough
extending across the Northeast United States early weekend will
shift east across the Atlantic, placing a mainly zonal flow
south of its base across the Southeast United States. At the
sfc, high pressure will remain centered across the Mid-Atlantic
and Southeast, maintaining dry and sunny conditions for a bulk
of the weekend. However, the airmass will continue to usher in
cold air to the region, resulting in afternoon highs in the low-
mid 50s Friday, then low-mid 50s north to upper 50s/lower 60s
south on Saturday as the airmass begins to modify under another
full day of sun. The main concern continues to address overnight
temps Friday night, with temps easily reaching the freezing
mark across all inland counties. Low temps should dip into the
mid-upper 20s inland, but remain in the mid-upper 30s to around
40 degrees near the coast.

Sunday: Sfc high pressure centered across the Mid-Atlantic
states will begin to shift east across the Atlantic while an
inverted trough develops and becomes positioned off the
Southeast Coast. A few afternoon/evening showers could develop
across the local area in response to the pattern, mainly as
isentropic ascent strengthens locally while moisture deepens in
advance of a front to the west early week. The most notable
change will be temperatures to start off the week with warm air
advection taking place within a southerly flow. Afternoon highs
should peak in the upper 60s to lower 70s, with even a few mid
70s for locations along and south of the I-16 corridor in
Southeast Georgia.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
A cold front is anticipated to shift across the region Sunday
night, leading to few/scattered showers across the local area.
Latest guidance continues to suggest the potential for scattered
shower activity on Monday as the front is positioned offshore
and forcing associated with isentropic ascent and an inverted
coastal trough persists early next week. The highest potential
for rainfall should come Tuesday as a low pressure system
develops across the northern Gulf (near the front), then tracks
across the Southeast. Numerous to widespread showers along with
weak instability supporting a few thunderstorms could support
rainfall amounts generally in the 0.5 to 1 inch range with
isolated higher amounts. Increasing clouds and precip coverage
north of any front should also limit afternoon highs early week,
generally to the upper 50s/lower 60s inland to mid-upper 60s
near the coast. By daybreak Wednesday, the low pressure system
and any front will be offshore with high pressure building
across the Southeast in its wake. This should yield dry and
cooler conditions mid week, with afternoon highs generally in
the mid-upper 50s inland to lower 60s near the coast.

&&

.AVIATION /00Z FRIDAY THROUGH TUESDAY/...
VFR conditions will prevail at KCHS, KJZI, and KSAV through 00z
Saturday.

Extended Aviation Outlook: VFR conditions are expected through
Saturday. Flight restrictions are possible at all terminals due
to showers and low clouds associated with a passing front Sunday
afternoon/evening into Monday.

&&

.MARINE...
Tonight: Weak south-southeasterly swell will linger across the
waters with northwesterly winds at 10 to 15 kt with gusts up to
20 kt through the evening. Thereafter, expect a low-lvl wind
surge to push across the waters as the base of the upper-lvl
trough swings by overhead. Model guidance continues to indicate
that the strongest winds will be located across the Georgia
waters with speeds reaching 15 to 20 kt with gusts up to 25-27
kt. Hence, a Small Craft Advisory (SCA) has been issued for the
nearshore and outer Georgia waters (AMZ354 and AMZ374). It`s
important to note that while the Edisto Beach-Savannah nearshore
zone do not have SCA, it will be fairly breezy overnight with
frequent gusts of 22-23 kt. Seas will range from 2 to 4 ft
across the nearshore waters and 4 to 5 ft across the outer
Georgia waters.

Friday through Monday: High pressure will dominate the weather
pattern to start off the weekend with a weaker pressure gradient
arriving across local waters by mid-late morning Friday. A
Small Craft Advisory across Georgia waters will likely come to
an end as a result. High pressure is then expected to slide
offshore with an inverted trough developing nearby late weekend,
which could help maintain a slightly tighter pressure gradient
across local waters and northeasterly winds in the 15-20 kt
range. Seas should peak in the 2-4 ft range during this
timeframe as well. Heading into early next week, the pressure
gradient becomes noticeably weaker and warm air advection occurs
well in advance of a cold front approaching from the west. This
will likely keep winds/seas below Small Craft Advisory levels
through early week, but there should be a 15-20 kt wind surge
post fropa Sunday night into Monday prior to a low pressure
system arriving. Seas should also slowly build up to 2-4 ft once
again with even a few 5 ft seas possible.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...None.
MARINE...Small Craft Advisory until 7 AM EST Friday for AMZ354-374.

&&

$$

NEAR TERM...BSH
SHORT TERM...DPB
LONG TERM...DPB
AVIATION...BSH/DPB
MARINE...Dennis/DPB