Expires:202607182000;;159880
FPUS52 KCHS 180623
ZFPCHS

Zone Forecast Product
National Weather Service Charleston SC
222 AM EDT Sat Jul 18 2026


GAZ219-182000-
Coastal Chatham-
Including the cities of Wilmington Island and Tybee Island
222 AM EDT Sat Jul 18 2026

...HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS
EVENING...

.REST OF TONIGHT...Mostly clear. Lows in the upper 70s. South
winds around 5 mph. 
.SATURDAY...Sunny. Highs in the lower 90s. Heat index values up
to 108. South winds 10 to 15 mph. 
.SATURDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index
values up to 105 early in the evening. Southwest winds 10 to
15 mph with gusts up to 25 mph. 
.SUNDAY...Sunny. Highs in the lower 90s. Southwest winds 10 to
15 mph with gusts up to 25 mph. Heat index values up to 107. 
.SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds
10 to 15 mph with gusts up to 25 mph. 
.MONDAY...Sunny with a chance of showers and thunderstorms. Highs
in the lower 90s. Chance of rain 30 percent. Heat index values up
to 105. 
.MONDAY NIGHT...Partly cloudy with a chance of showers with a
slight chance of thunderstorms. Lows in the upper 70s. Chance of
rain 40 percent. 
.TUESDAY...Mostly sunny with a chance of showers and
thunderstorms. Highs in the lower 90s. Chance of rain 30 percent.
Heat index values up to 105. 
.TUESDAY NIGHT...Mostly cloudy. Lows in the upper 70s. 
.WEDNESDAY...Mostly sunny with a slight chance of showers and
thunderstorms. Highs in the lower 90s. Chance of rain 20 percent.
Heat index values up to 110. 
.WEDNESDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the upper 70s. Chance of rain 50 percent.
Heat index values up to 105 early in the evening. 
.THURSDAY...Showers and thunderstorms likely. Highs around 90.
Chance of rain 60 percent. Heat index values up to 105. 
.THURSDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the upper 70s. Chance of rain 50 percent. 
.FRIDAY...Mostly sunny with a chance of showers and
thunderstorms. Highs in the upper 80s. Chance of rain 50 percent.

$$