North Charleston, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

865
FXUS62 KCHS 160305
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
1105 PM EDT Wed Jul 15 2026

.WHAT HAS CHANGED...
Removed two key messages.

&&

.KEY MESSAGES...
- 1) Hot and humid conditions are expected to return to the
  area late this week through early next week. Heat Advisories
  could be needed.

&&

.DISCUSSION...
KEY MESSAGE 1: Hot and humid conditions are expected to return
to the area late this week through early next week. Heat
Advisories could be needed.

Temperatures are forecast to ramp back up into the early to mid 90s
beginning Thursday and persist into next week. As the subtropical
high becomes established, southwest to south low-level flow will
bring dewpoints into the mid to upper 70s along the coast. The
combination of highs into the 90s and elevated dewpoints will yield
widespread heat index values of 100+ degrees across the area. The
highest heat indices are expected along the coast where the
probability of values in the 105-110 degree range will be highest.
Heat Advisories could be needed, perhaps as soon as Friday. The
potential for Heat Advisories will then persist through the weekend
and into early next week.

&&

.AVIATION /03Z THURSDAY THROUGH MONDAY/...
Shower and thunderstorm activity in SE GA has pushed south of
KSAV, while the SC Lowcountry remains dry this evening. Ridging
continues to build in from the north overnight, with VFR
conditions prevailing, though periods of favorable radiational
cooling for the Lowcountry could result in some patchy, shallow
fog before sunrise. Still, impacts not expected at CHS and JZI.
Mostly clear skies and light winds Thursday morning, with
limited coverage of showers and storms mainly across SE GA
expected Thursday afternoon.

Extended Aviation Outlook: Mostly VFR. Low chances of direct impacts
from afternoon and evening showers and thunderstorms each day.

&&

.MARINE...
Tonight through Monday: The subtropical high will start to become
more established beginning Thursday which will bring a return to a
more typical flow pattern marked by southwest to south flow surging
along the land/sea interface with the sea breeze. A period of
stronger flow is expected over the weekend and into early next week
as the local waters get pinched between the subtropical high and an
inland trough. Over the weekend, wind speeds into the 15-20 knot
range will become more common with the potential for gusts up to
around 25 knots mainly for the SC coast and Charleston Harbor. This
could bring the need for some short duration Small Craft
Advisories.

&&

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

&&

$$