North Charleston, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

914
FXUS62 KCHS 082326
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
626 PM EST Sun Nov 8 2026

.WHAT HAS CHANGED...
The Aviation Section has been updated to reflect the 00Z TAFs.

&&

.KEY MESSAGES...
- 1) Dry conditions and seasonable temperatures expected this
  week. Colder conditions this weekend.

- 2) Freezing temperatures are possible across far inland areas
  Friday night, followed by a potential widespread freeze
  Saturday night.

&&

.DISCUSSION...
KEY MESSAGE 1: Dry conditions and seasonable temperatures
expected this week. Colder conditions this weekend.

Tonight: High pressure will prevail again tonight with a modest
northwest flow aloft. The boundary layer is poised to decouple
quickly this evening once insolation is lost and a weak sea
breeze along the coastal corridor breaks down. This will result
in a calm to light/variable wind regime. These winds combined
with mostly clear skies will promote moderate to strong
radiational cooling with low expected to drop into the lower-mid
40s inland to the upper 50s at the beaches. The 08/13z NBM lows
looked reasonable overall (somewhat unusual given its typical
warm bias in radiational regimes), but some output from the
RRFS, H3R and RAP was incorporated to better capture the large
temperature gradient along the coastal counties and to resolve
the more typical mesoscale influences across the Francis Marion
National Forest, the Santee-Cooper lakes and the open areas of
Fort Stewart.

There is a risk for some fog early Monday morning, but model
1000 hPa condensation pressure deficits are not ideal. This
suggests any fog that form will likely be shallow in nature
with vsbys varying greatly over short distances. The risk for
more substantial fog looks greatest near the Altamaha River
where some slightly deeper fog layers could form resulting in at
least some locally dense fog at times. The best juxtaposition of
REFS and NBM probabilities for vsby <1 mile are only running
about 30-50% over parts of Tattnall, Long, McIntosh, Liberty and
Bryan Counties. The overall risk for widespread dense fog looks
pretty low at this point, but this will be closely monitored.

Monday through Wednesday: Surface High pressure will prevail
across the Southeast U.S., bringing dry conditions. High
temperatures all three days should range from the mid 70s to
upper 70s, except cooler at the beaches. These values are a few
degrees above normal. The combination of light to calm winds and
mostly clear skies for the first half of Monday night should
lead to decent radiational cooling. Lows should dip to around 40
degrees far inland, and the 50s at/near the beaches. An
increase in clouds should warm up low temperatures a few degrees
Tuesday night, and then again Wednesday night.


KEY MESSAGE 2: Freezing temperatures are possible across far
inland areas Friday night, followed by a potential widespread
freeze Saturday night.

A fast moving cold front will zoom through our region on
Thursday. This may bring a brief period of light showers, mainly
to inland locations. It`s still too early to determine the
exact QPF amounts, but the models point towards very little QPF.
What the models do show is strong cold air advection behind the
front, which will lead to breezy conditions and below normal
temperatures. Highs on Friday may struggle to reach the mid 60s.
But more noteworthy will be the low temperatures. Freezing
temperatures are possible across our far inland locations Friday
night. Saturday, highs may not even reach the 60 degree mark.
That`ll be reflected with the coldest night so far this season.
There is the potential for a widespread freeze Saturday night,
except near the coast.

&&

.AVIATION /00Z MONDAY THROUGH FRIDAY/...
Generally prevailing VFR through the 00Z TAF period at
KCHS/KJZI/KSAV. There is a risk for shallow ground fog at all
terminals late tonight/early Monday morning, with the greatest
risk for impacts at KSAV. MIFG was highlighted just before
daybreak with a TEMPO for MVFR vsbys at KSAV 10-12z.

Extended Aviation Outlook: VFR during the daytime, with visibility
restrictions possible during the late overnight into early morning
hours on both Tuesday and Wednesday. Speeds will remain less
than 10 kt with seas 2-4 ft.

&&

.MARINE...
Through Tonight: Tranquil conditions will prevail. Northeast
winds will gradually become variable for a time tonight, then
turn west to northwest as daybreak approaches. Speeds will
remain less than 10 kt with seas 2-4 ft.

Monday through Friday: Surface High pressure will prevail
across the Southeast U.S. the first half of this week, bringing
a light to perhaps gentle breeze. Seas will be 2-3 ft within 20
nm and 3-4 ft for the 20-60 nm waters. Winds increase Thursday
ahead of an approaching cold front, becoming gusty. Likewise,
wind- driven seas will build. Small Craft Advisories will likely
be needed for our waters.

&&

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

&&

$$