Charleston, South Carolina 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for 4 Miles E Charleston SC
National Weather Service Forecast for:
4 Miles E Charleston SC
Issued by: National Weather Service Charleston, SC |
Updated: 7:06 pm EDT May 12, 2025 |
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Tonight
 T-storms
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Tuesday
 Chance Showers then Slight Chance T-storms
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Tuesday Night
 Chance Showers
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Wednesday
 Chance Showers
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Wednesday Night
 Slight Chance T-storms then Chance Showers
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Thursday
 Chance Showers then Sunny
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Thursday Night
 Partly Cloudy
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Friday
 Mostly Sunny
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Friday Night
 Mostly Cloudy
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Lo 70 °F |
Hi 80 °F |
Lo 69 °F |
Hi 80 °F |
Lo 70 °F |
Hi 84 °F |
Lo 72 °F |
Hi 88 °F |
Lo 75 °F |
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Tonight
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Showers and thunderstorms before midnight, then showers and possibly a thunderstorm, mainly after midnight. Low around 70. South wind 9 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible. |
Tuesday
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A 30 percent chance of showers and thunderstorms, mainly before 8am. Mostly sunny, with a high near 80. Southwest wind 7 to 13 mph. |
Tuesday Night
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A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. South wind 7 to 10 mph. |
Wednesday
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A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80. Southwest wind 6 to 13 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Wednesday Night
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A 30 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 70. South wind around 9 mph. |
Thursday
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A 30 percent chance of showers before 8am. Sunny, with a high near 84. |
Thursday Night
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Partly cloudy, with a low around 72. |
Friday
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Mostly sunny, with a high near 88. |
Friday Night
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Mostly cloudy, with a low around 75. |
Saturday
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Mostly sunny, with a high near 89. |
Saturday Night
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A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. |
Sunday
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A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. |
Sunday Night
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Partly cloudy, with a low around 72. |
Monday
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Mostly sunny, with a high near 87. |
Forecast from NOAA-NWS
for 4 Miles E Charleston SC.
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Weather Forecast Discussion
583
FXUS62 KCHS 122029
AFDCHS
Area Forecast Discussion
National Weather Service Charleston SC
Issued by National Weather Service Columbia SC
429 PM EDT Mon May 12 2025
.SYNOPSIS...
A coastal front has started to lift north across the region.
High pressure is expected to return late week with temperatures
building.
&&
.NEAR TERM /UNTIL 6 AM TUESDAY MORNING/...
This afternoon, most of the convection has started to depart
northeast as a vertically stacked area of low spins over western
TN. However, convection that is more cellular in nature, has
already started to develop across western GA. The convection is
developing on the LFQ of an upper level jet streak. The CWA
will remain in the warm sector between a lifting warm front and
approaching cold front this afternoon. High temperatures are
forecast to range in the mid to upper 70s.
This evening, the cold front is timed to push over SE GA this
evening, then over the SC Lowcountry late tonight. This boundary
should focus the development of thunderstorms, possibly developing
into a band of storms. These storms will push NE across the CWA this
evening and tonight. The storms may remain strong to severe across
SE GA this evening given lingering instability and shear, with
damaging wind gusts the primary hazard. SPC has highlighted the
region with a marginal risk for severe weather. Low temperature
are forecast to range in the mid to upper 60s.
&&
.SHORT TERM /6 AM TUESDAY MORNING THROUGH 6 PM TUESDAY/...
A closed mid level low over the Ohio and Tennessee Valleys at the
start of the period will continue to slowly lift north-northeast
Tuesday into Wednesday, eventually opening up into a trough. Notably
less convective coverage is expected overall than previous days, but
there will still be at least scattered showers and thunderstorms
developing each day. Higher activity/PoPs should become more focused
over South Carolina on Wednesday. Highs will be within a couple
degrees of normal. Lows will largely stay in the 60s.
As the mid level trough axis shifts off the East coast, ridging will
begin to build into the Southeast on Thursday. The surface will
largely feature higher pressure offshore and a weak trough
developing inland. Dry and quiet weather is expected with warming
temperatures. Highs are forecast to reach the upper 80s to around 90
in most locations away from the beaches.
&&
.LONG TERM /TUESDAY NIGHT THROUGH MONDAY/...
Mid level ridge will largely persist over the Southeast through late
week, although it appears to flatten some on the weekend as models
indicate a weak shortwave passing over the Carolinas. At the
surface, high pressure will remain offshore while troughing resides
inland. A weak front could approach over the weekend, but unclear if
it is actually able to make it through the area. Rain chances are
fairly low through the period, with only 20% PoPs highlighted in the
forecast Saturday and Sunday. Perhaps more notably will be the
warming temperatures. Highs are expected to reach the low to mid
90s, with even higher heat indices, possibly exceeding 100 in spots.
Lows will also remain above climo.
&&
.AVIATION /20Z MONDAY THROUGH SATURDAY/...
All TAF sites are sub VFR this afternoon as an area of low
pressure rotates across western TN. A band of showers out ahead
of the closed low has started to exit the area to the east. This
band of showers will continue to move east with light to
occasionally moderate rain persisting at KJZI and KCHS until 21
- 23z. Towards KSAV, only VCSH is forecast through the afternoon
with some wind gusts around 20 kt possible.
Another band of thunderstorms has already started to develop
across southwest Georgia ahead of an approaching cold front.
Guidance and the environment continues to support this line of
showers and thunderstorms moving into southeast Georgia between
22z - 00z and reaching KSAV between 2z and 5z. After the line of
showers and thunderstorms exits the region, stratus will begin
to build down restricting visibilities and ceilings.
Tuesday morning, the remaining convection that was over the
Charleston terminals will exit the region with a slow recovery
in ceilings and visibilities expected.
Extended Aviation Outlook: Brief flight restrictions are possible in
showers/thunderstorms Tuesday and Wednesday. Otherwise, prevailing
VFR.
&&
.MARINE...
Thunderstorms will remain common across the marine zones today and
tonight, the greatest coverage this morning with another band of
storms this evening. Some of these storms could produce wind gusts
of 34 kts or greater, a waterspout cannot be ruled out this morning.
The pattern will support southeast winds between 10 to 15 kts with
gusts around 25 kts across the Atlantic waters. Seas will build to 4
to 7 ft by this afternoon, then slowly decreasing after midnight
tonight. Small Craft Advisories have been posted to highlight the
wind and wave conditions for today into tonight.
Tuesday through Saturday: Marine conditions will vastly improve on
Tuesday with the remaining Small Craft Advisories expected to be
down by early afternoon. No additional concerns are expected through
the remainder of the week with generally south to southwest winds 15
knots or less and seas settling into the 2-4 ft range.
Rip Currents, the combination of onshore flow and 2 to 3 breakers
may produce rip currents along the SC/GA coast today. Breakers
could exceed 3 ft along the Charleston County coast this
afternoon.
&&
.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...None.
MARINE...Small Craft Advisory until 8 PM EDT this evening for AMZ330.
Small Craft Advisory until 2 PM EDT Tuesday for AMZ350-374.
Small Craft Advisory until 8 AM EDT Tuesday for AMZ352.
Small Craft Advisory until 2 AM EDT Tuesday for AMZ354.
&&
$$
NEAR TERM...Haines
SHORT TERM...ETM
LONG TERM...ETM
AVIATION...ETM/Haines
MARINE...ETM/Haines
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