North Charleston, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

781
FXUS62 KCHS 051125
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
625 AM EST Thu Mar 5 2026

.WHAT HAS CHANGED...
The Aviation Section was updated to reflect the 12Z TAF
issuance.

&&

.KEY MESSAGES...
- 1) Dense fog is anticipated across much of the southeast South
  Carolina and southeast Georgia tonight into this morning. A
  Dense Fog Advisory has been issued for the entire forecast
  area through 9 AM.

- 2) Unseasonably warm temperatures are expected through early
  next week, with increasing rain chances beginning this
  weekend.

&&

.DISCUSSION...
KEY MESSAGE 1: Dense fog is anticipated across much of the
southeast South Carolina and southeast Georgia tonight into
this morning. A Dense Fog Advisory has been issued for the
entire forecast area through 9 AM.

Observations from METARs and webcams indicate that dense fog has
developed across some locations. Given the strong guidance
agreement in the development of dense fog a Dense Fog Advisory
has been issued for the entire forecast area through 9 AM.
Expect conditions to worsen headed towards sunrise. Fog is
expected to linger until 9 AM or even 10 AM in some spots.


KEY MESSAGE 2: Unseasonably warm temperatures are expected through
early next week, with increasing rain chances beginning this
weekend.

Deep-layer high pressure will set up over the Western Atlantic today
and persist into early next week. Despite sufficient moisture,
persistent subsidence associated with this pattern will suppress
widespread convection and support a pronounced warming trend.

Above-normal temperatures are expected to continue through early
next week. Afternoon highs will climb into the upper 70s and lower
80s across southeast South Carolina each day. Across southeast
Georgia, temperatures will reach the lower to middle 80s. Areas
especially near the Altamaha River could see highs peaking in the
upper 80s Saturday into early next week. Beach communities will peak
several degrees cooler due to the influence of the cooler shelf
waters. Overnight lows will remain mild as well; in the upper 50s
and lower 60s. Despite these warm temperatures, no records are
forecast at this time.

Rain-free conditions are expected today; however, slight chance POPs
are currently forecast for the far inland counties both Friday and
Saturday where subsidence is expected to be weakest. However, as the
ridge begins to flatten Sunday, rain chances will increase into
early next week, particularly during the afternoon and evening
hours. A series of weak shortwaves passing to the northwest Sunday
into Monday could provide additional forcing for showers and
thunderstorms as deep moisture remains in place. No severe weather
expected at this time.

&&

.AVIATION /12Z THURSDAY THROUGH MONDAY/...
LIFR conditions will begin the 12Z TAF period at KJZI and KSAV,
with MVFR at KCHS. Conditions will improve quickly after sunrise
this morning as fog mixes out and VFR will likely return by
mid-morning. VFR will then prevail through the remainder of
today. Another round of fog is expected tonight into Friday
morning bringing restrictive cigs/vsbys.

Extended Aviation Outlook: Restrictive ceilings are possible
overnight into the early morning hours each night through the
weekend due to low stratus/fog.

&&

.MARINE...
High pressure will remain the dominant weather feature across
local waters, extending across the western Atlantic through
this morning. The main forecast challenge through the remainder
of tonight and into today will be the sea fog. Satellite imagery
and webcam observations indicate that there is sea fog lingering
just offshore. While conditions may not be dense yet, a Marine
Dense Fog Advisory has been issued for all nearshore waters as
conditions are anticipated to get worse headed towards daybreak.
While there is no DFA for the Charleston Harbor yet conditions
are being monitored and one may be required later tonight.

High pressure will remain centered over the western Atlantic through
the weekend, resulting in an easterly/southeasterly flow through
Saturday. Winds are then expected to shift out of the southwest
Sunday through early next week. Both winds and seas are expected to
stay below Small Craft Advisory levels.

Sea fog will continue to be a recurring concern as warm, moist air
moves over the cooler shelf waters. Periods of fog may redevelop
frequently and could persist through the weekend, potentially
lingering into early next week. The fog could become dense at times,
reducing visibility for mariners. Additional Marine Dense Fog
Advisories could be needed.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...Dense Fog Advisory until 9 AM EST this morning for GAZ087-088-
     099>101-114>119-137>141.
SC...Dense Fog Advisory until 9 AM EST this morning for SCZ040-
     042>045-047>052.
MARINE...Dense Fog Advisory until 9 AM EST this morning for AMZ330-350-
     352-354.

&&

$$

BRS/CPM