North Charleston, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

692
FXUS62 KCHS 260114
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
814 PM EST Tue Nov 25 2025

.SYNOPSIS...
High pressure will prevail through today, then a strong cold
front will sweep through late Wednesday. High pressure will
usher in colder weather Thursday through the weekend.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
Evening Update: A mix of limited low and high clouds continues
after sunset this evening. A few automated sensors are reporting
fog, but webcams do to support this, with any fog that does
exist being very shallow and light. Mixing increases through the
rest of the evening as well, further limiting the fog threat.

Tonight: Expect warm, southerly slow to persist overnight as
the aforementioned cold front approaches the region and a
pronounced pre- frontal low-lvl jet intensifies across the
Southeastern CONUS. With plenty of moisture remaining across the
region, it`s possible to see some pre-frontal showers across
the interior counties a couple hours before sunrise. This will
keep the boundary layer well-mixed with lows in the 58-62 range
inland with lower 60s at the beaches.

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/...
Wednesday: As longwave troughing dominates aloft, an initial
weaker cold front will cross the area Wednesday afternoon, with
a secondary stronger cold front passing through the region late
in the evening. Expect to see a couple isolated showers in the
morning across the interior counties as a considerable amount of
moisture remains with PWATs ranging from 1.5 to 1.75 inches.
However, dry-air is expected to take- over in the afternoon and
rain chances will significantly decrease across the coastal
counties ahead of the boundary. Also, with the lack of dynamics
present, it`ll be difficult to see much rainfall (esp. near the
coastline). It`s important to note that southwesterly winds will
become quite gusty out ahead of the front, and the forecast is
likely underdone in this category. Temperatures will reach into
the mid to upper 70s, before dropping out overnight behind the
passage of the cold front with lows dipping into the upper 30s
to low 40s across the interior counties and mid to low 50s at
the beaches.

Thursday and Friday: Expect cold, dry conditions to persist into
Friday as high pressure builds into the region behind the frontal
passage. Aloft, zonal flow will takeover and maintain quiet
conditions across the Southeastern CONUS. A rain-free forecast has
been maintained until the end of this period. However, temperatures
will be noticeably cooler, with highs in the upper 50s to low 60s on
Thursday and the low to mid 50s on Friday. Overnight lows will dip
into the 30s across most locations Thursday night, with freezing
temperatures likely across the far interior. However, the local
frost/freeze program ended earlier this month with the widespread
freeze, so no Freeze headlines will be issued.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
Dry, cool conditions will persist throughout the weekend as zonal
flow dominates the pattern aloft and high pressure remaining
situated at the surface. Therefore, a rain-free forecast has been
maintained with temperatures below normal. There has been some
indication of a coastal low forming and impacting the region early
next week in some of the deterministic guidance. However, a good
amount of uncertainty remains on timing and arrival of this
system.

&&

.AVIATION /01Z WEDNESDAY THROUGH SUNDAY/...
26/00z TAF Discussion:
KCHS/KJZI/KSAV: VFR prevails under calm conditions this evening.
Fog currently reported by the JZI sensor is not supported by
webcams, and VFR TAF remains in place. Additionally, there is a
low chance for some sub-VFR ceilings along the coast through
early evening. The gradient increases late evening, bringing a
more definitive end to the already very low fog threat and
mixing out any low clouds that do develop near the coast.


SSW winds become gusty through the later morning hours
Wednesday as a cold front approaches. A few showers are
possible, but coverage and intensity are too low to justify even
a mention in the TAF. Expect an abrupt wind shift from SW to W
as an initial cold front crosses the terminals Wednesday
afternoon, with a secondary cold front bringing winds NW
Wednesday evening.

Extended Aviation Outlook: Prevailing VFR.

&&

.MARINE...
Evening Update: Light onshore winds and RH of 90% will bring a
brief window where patchy to areas of sea fog could develop,
mainly along the coast near and north of Savannah. Any fog
should dissipate by late evening as the gradient begins to
tighten.

Tonight: With the low-lvl jet intensifying and the cold front
approaching from the Deep South, southerly flow will increase to
10 to 15 kts with gusts up to 20 kts possible through the early
morning hours Wednesday. Seas will average 2 to 3 ft in the
nearshore wasters and 3 to 4 ft offshore waters.

Wednesday through Friday: A cold front is forecast to push through
the region late Wednesday evening. Southwesterly winds will surge
ahead of the approaching front on Wednesday. It`s possible to see
wind speeds of 15 to 20 kts with some gusts to 22-23 kts possible
(mainly in the Charleston nearshore waters). Post-FROPA conditions
will yield a wind shift to the northeast as high pressure builds
into the marine waters with speeds of 10 to 15 kts and gusts up to
20 kts. Small Craft Advisories will not be issued at this time as
conditions remain below the criteria. Seas will range from 2 to 3 ft
with 4 footers possible in the 20 to 60 nm offshore GA waters.

&&

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

&&

$$

NEAR TERM...CEB/Dennis
SHORT TERM...Dennis
LONG TERM...Dennis
AVIATION...CEB/Dennis/JRL
MARINE...Dennis