North Charleston, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

544
FXUS62 KCHS 140710
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
210 AM EST Sat Nov 14 2026

.WHAT HAS CHANGED...
The Marine Section was updated to reflect the newly issued Small
Craft Advisory for the nearshore Charleston County waters.

&&

.KEY MESSAGES...
- 1) Frost/freeze conditions are possible tonight through Sunday
  night.

&&

.DISCUSSION...
KEY MESSAGE 1: Frost/freeze conditions are possible tonight through
Sunday night.

A high pressure system of 1025 mb will continue to shift southward
over the Mid-west through daybreak. This will yield steady H85 CAA
through this early morning, therefore expect low temperatures in the
morning to drop into the mid 30s across inland counties with low to
mid 40s across the coastal counties. Also, calm to light
northwesterly winds around 5 mph will preserve through daybreak.
Thus, the combination of the low temperatures, the light to calm
winds, and RH values ranging in the mid to upper 90s will result in
areas to patchy frost along and west of the I-95 corridor. A Frost
Advisory has been issued for this area from 2AM to 8AM this morning
as a result.

Continuing on through the rest of today, the high pressure will
expand into the mid and upper MS Valley, with it`s periphery
stretching into the Southeastern CONUS. Expect northerly winds to
continue to usher cold air into the region throughout tonight.
Despite an ample amount of sunshine, afternoon highs will only reach
into the upper 50s to low 60s. The combination of clear skies with
calm to light winds will lead to a good amount of radiational
cooling. As a result, expect overnight lows to drop into upper 20s
to low 30s across the inland counties and mid 30s to low 40s across
the coastal counties. Therefore, there was a good amount of
confidence to upgrade the Freeze Watch to a Freeze Warning for early
Sunday morning across the interior southeast Georgia and southeast
South Carolina counties. The forecast notes widespread to areas of
frost to account for this. It`s possible we might need to issue a
Frost Advisory with the next forecast update for a couple counties
east of the Freeze Warning.

If widespread freezing temperatures occur on Saturday night into
Sunday morning, then this will end the local growing season and
Frost/Freeze products will not be issued for Sunday night into
Monday morning. However, if only some areas observe freezing
temperatures, then the growing season continues and we will likely
need Frost/Freeze products on Sunday night into Monday morning.
Regardless of the outcome, overnight temperatures will be below
normal for this time of year.

&&

.AVIATION /07Z SATURDAY THROUGH WEDNESDAY/...
VFR through the 06Z TAF period at KCHS/KJZI/KSAV with NW/NNW winds 5
to 10 knots through Saturday. Winds are forecast to go light to calm
Saturday night.

Extended Aviation Outlook: VFR.

&&

.MARINE...
Given current observations of gusts 25 knots in the Charleston
County nearshore waters, have issued a Small Craft Advisory
through 8 AM this morning.

Today and Tonight: In the wake of a departing cold front and
building high pressure, a pinched pressure gradient is present over
the marine waters early this morning. This is resulting in NW gusts
upwards of 25 knots across the 20 to 60 nm offshore GA waters. The
Small Craft Advisory for these waters has been extended until 8 AM
this morning. As the day progresses and high pressure begins to
dominate the synoptic pattern winds will decline over the waters,
with gusts upwards of 15 knots this afternoon. Similarly, seas will
relax as well, with 2 to 3 ft by this afternoon.

Extended Marine: Surface high pressure over the mid to upper
Mississippi Valley this weekend will shift to the Mid-Atlantic
states early next week. No Small Craft Advisories are anticipated
through Monday. However, a pinched pressure gradient will develop
off the coast Tuesday into midweek as the high pressure shifts to
the Mid-Atlantic states. Gusts to 25 knots and seas building to 6 ft
are in the forecast and Small Craft Advisories will likely be needed
for portions of the marine zones.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...Frost Advisory until 8 AM EST this morning for GAZ087-088-
     099>101-114-115-137-216-238.
     Freeze Warning from 1 AM to 9 AM EST Sunday for GAZ087-088-
     099>101-114-115.
SC...Frost Advisory until 8 AM EST this morning for SCZ040-042>045-
     147.
     Freeze Warning from 1 AM to 9 AM EST Sunday for SCZ040-042>045-
     147.
MARINE...Small Craft Advisory until 8 AM EST this morning for AMZ360-
     384.

&&

$$

CPM/Dennis