North Charleston, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

580
FXUS62 KCHS 271800
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
100 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 /THROUGH TONIGHT/...
As an upper-lvl trough marches across portions of New England, an
associated cold front will continue to track offshore of the East
Coast. In wake of this exiting cold front, a modified continental
polar (cP) airmass will continue to advect into the region through
tonight. This pattern will yield strong cold air advection (CAA)
with 850 hPa temperatures progged to drop to 1 to 2C by this evening
and then reaching -3 to +1C overnight. Expect high temperatures to
reach into the mid to upper 50s across the region with spots across
southeast Georgia tipping into the low 60s. Along with these cooler
temperatures, it remains rather dry outside with dewpoints ranging
from low to mid 30s (as of 27/16Z) and expect this to depreciate
through the overnight with dewpoints in the low to mid 20s by
28/04Z. As a result, the skies will remain clear as CAA continues to
be in full-force throughout the period. Expect northwesterly winds
to stay elevated as the pressure gradient remains enhanced with the
aforementioned cP airmass building into the region.

Tonight: Anticipate cold, northwesterly flow to persist overnight
with lows dropping into the upper 20s across the interior counties
and low to mid 30s near the beaches. Wind speeds will likely remain
elevated with speeds of 5 to 10 mph with gusts up to 15 mph
possible. This pattern will result in brisk-like conditions across
the region with wind chills dropping into the upper 20s to low 30s.
However, wind chills look to remain above Cold Weather Advisory
criteria.

&&

.SHORT TERM /FRIDAY 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 WEDNESDAY/...
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 /18Z THURSDAY THROUGH TUESDAY/...
27/18z TAF Discussion:
KCHS/KJZI/KSAV: VFR through 28/18z.

Extended Aviation Outlook: VFR conditions are expected at
CHS/JZI/SAV terminals Friday afternoon 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...
Through 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 from 7 PM this evening to 7 AM EST Friday
     for AMZ354-374.

&&

$$

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