Marine Weather Net

Summerville, SC Weather Forecast


Marine Forecast: Charleston Harbor


Summerville, South Carolina

 Lat: 33.02N, Lon: 80.18W

Current Conditions Updated: 556 PM EDT FRI JUL 18 2025

Mostly Cloudy
Temp: 80°F
  • Humidity:
  • 90%
  • Winds:
  • 5 MPH S
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.13 in.
  • Dewpoint:
  • 77°F
  • Heat index:
  • 86°F

  • Sunrise:
  • 6:23 AM EDT
  • Sunset:
  • 8:28 PM EDT
  • Moonrise:
  • 12:39 AM EDT
  • Moonset:
  • 2:29 PM EDT

TONIGHT

CHANCE OF T-STORM
Lo: 75°F
Precip: 40%

SATURDAY

SUNNY

Hi: 99°F
Lo: 79°F

SUNDAY

SUNNY

Hi: 99°F
Lo: 79°F
Precip: 20%

MONDAY

MOSTLY SUNNY
Hi: 99°F
Lo: 75°F
Precip: 50%
Weather Forecast In Detail:
Forecast Issued: 621 PM EDT Fri Jul 18 2025

Tonight...Partly cloudy with a chance of showers and thunderstorms this evening, then mostly clear after midnight. Lows in the mid 70s. Southwest winds around 5 mph. Chance of rain 40 percent.
Saturday...Sunny. Highs in the upper 90s. Heat index values up to 109. West winds 5 to 10 mph.
Saturday Night...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 70s. Heat index values up to 106 early in the evening. Southwest winds 5 to 10 mph.
Sunday...Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. West winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 109.
Sunday Night...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 70s. West winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 105 early in the evening.
Monday...Mostly sunny with a chance of showers and thunderstorms. Highs in the upper 90s. Chance of rain 50 percent. Heat index values up to 110.
Monday Night...Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 50 percent. Heat index values up to 105 early in the evening.
Tuesday...Showers and thunderstorms. Highs around 90. Chance of rain 80 percent.
Tuesday Night...Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 40 percent.
Wednesday...Partly sunny with a chance of showers and thunderstorms. Highs around 90. Chance of rain 50 percent.
Wednesday Night...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 20 percent.
Thursday...Partly sunny with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 50 percent.
Thursday Night...Partly cloudy. Lows in the mid 70s.
Friday...Mostly sunny with a chance of showers and thunderstorms. Highs in the mid 90s. Chance of rain 30 percent. Heat index values up to 105.
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