North Charleston, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

546
FXUS62 KCHS 131857
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
157 PM EST Fri Nov 13 2026

.WHAT HAS CHANGED...
All sections have been updated.

&&

.KEY MESSAGES...
- 1) Dry conditions with gusty winds this afternoon.

- 2) Frost/freeze conditions are possible tonight through
  Sunday night.

&&

.DISCUSSION...
KEY MESSAGE 1: Dry conditions with gusty winds this afternoon.

Temperatures should peak this afternoon in the low to mid 60s over
dewpoints in the 30s. RH values this afternoon have already fallen
into the low to mid 30s, and could fall into the upper 20s
during the heat of the afternoon. The dry conditions combined
with gusty west winds could pose a limited fire weather risk for
a few hours this afternoon given continued drought/dry fuels.
Winds will decrease and RH will recover quickly early this
evening.

KEY MESSAGE 2: Frost/freeze conditions are possible Friday night
through Sunday night.

The center of an 1025 mb high will push south over the Mid West
tonight. As the high builds south, steady H85 CAA is forecast to
occur until 12Z Saturday, with values between 0 to -2C. Using a
blend of guidance, low temperatures Saturday morning are forecast to
range from the mid 30s inland to the low to mid 40s across the
coastal counties. Northwest winds should range between 5 to 8 mph
through much of tonight, but could decouple during the pre-dawn
hours. Given temperatures in the mid 30s, light to calm winds, and
RH in the 90s, areas to patchy frost is expected along and west of
the I-95 corridor. The area has been highlighted with a Frost
Advisory from 2-8 AM Saturday.

Saturday and Saturday Night: High pressure will be spread along the
mid and upper MS Valley, with it`s periphery stretching into the
Southeast U.S. Northerly winds will continue to usher cold air into
our area. Thickness values and 850 mb temperatures point towards
colder temperatures than what some of the MOS has, and we leaned
this way with the forecast. Despite full sunshine, high temperatures
may struggle to reach the 60 degree mark, which is about 10 degrees
below normal for this time of year. The combination of clear skies
and calm or very light north to northeasterly winds will lead to
plenty of radiational cooling. Lows should range from the upper 20s
in the coldest spots far inland to around freezing closer to the
coast, with coastal counties generally in the mid to upper 30s, and
the beaches generally in the 40s. Since there is still some
uncertainty with the temperatures, we maintained the Freeze Watch.
Plus, this matches our surrounding offices. Though, adjustments may
be needed with the areal coverage when it`s upgraded to a warning.
Additionally, there will be frost within the current watch and
closer to the coast (where there are no watches).

Sunday and Sunday Night: High pressure along the mid and upper MS
Valley in the morning will slowly shift eastward towards the OH
Valley, with it`s periphery continuing to stretch into the Southeast
U.S. Winds may shift a bit to the northeast during the day, and
continue to usher cold air into our area. Once again, we leaned
towards the colder end of guidance. Once again, with plenty of
sunshine, high temperatures may struggle to reach the 60 degree
mark. Calm winds and clear skies will lead to plenty of radiational
cooling the first half of the night. Though, increasing high clouds
and light winds may limit the full cooling potential the second half
of the night. As a result, lows should be around freezing very far
inland, the mid to upper 30s closer to the coast, with locations at
and near the beaches reaching well into the 40s.

If we have widespread freezing temperatures Saturday night into
Sunday morning, then that will end our local growing season, and no
Frost/Freeze products will be needed Sunday night into Monday
morning. But if only some areas reach freezing, then the growing
season and Frost/Freeze products will continue Sunday night into
Monday morning. Either way, temperatures will be colder than
normal.

&&

.AVIATION /18Z FRIDAY THROUGH WEDNESDAY/...
18Z TAFs: VFR. Gusty WNW winds will continue across the terminals
through the rest of this afternoon. Winds will decrease to 5-8 kts
this evening and turn from the northwest tonight, then from the
north after sunrise on Saturday.

Extended Aviation Outlook: VFR.

&&

.MARINE...
Tonight: A period of cold air advection and tightening of the
pressure gradient is likely across coastal waters this evening and
overnight. Conditions across the outer GA waters will feature gusty
west-northwest winds up to 25-30 kt and building seas up to 3-6 ft.
A Small Craft Advisory (SCA) has been issued for offshore Georgia
waters from this evening through sunrise Saturday. Conditions across
the nearshore waters may near SCA conditions this evening into late
tonight, but are expected to remain just below criteria.

Extended Marine: High pressure over the mid and upper MS Valley
Saturday will slowly shift towards the Mid-Atlantic States by the
middle of next week. While there should be modest winds and seas
through Monday, no Small Craft Advisories are expected. Though, as
the High gets closer on Tuesday, winds and seas are expected to
increase, leading to Small Craft Advisories.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...Frost Advisory from 1 AM to 8 AM EST Saturday for GAZ087-088-
     099>101-114-115-137-216-238.
     Freeze Watch from late Saturday night through Sunday morning
     for GAZ087-088-099>101-114-115.
SC...Frost Advisory from 1 AM to 8 AM EST Saturday for SCZ040-
     042>045-147.
     Freeze Watch from late Saturday night through Sunday morning
     for SCZ040-042>045-147.
MARINE...Small Craft Advisory from 6 PM this evening to 2 AM EST
     Saturday for AMZ384.

&&

$$