Marine Weather Net

St. Simons Island, GA Weather Forecast




Saint Simons Island, Georgia

 Lat: 31.15N, Lon: 81.37W

Current Conditions Updated: 115 AM EDT SAT JUL 19 2025

Clear


Temp: 82°F
  • Humidity:
  • 88%
  • Winds:
  • 6 MPH SSW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.15 in.
  • Dewpoint:
  • 78°F
  • Heat index:
  • 91°F

  • Sunrise:
  • 6:32 AM EDT
  • Sunset:
  • 8:28 PM EDT
  • Moonrise:
  • 1:23 AM EDT
  • Moonset:
  • 3:41 PM EDT

TONIGHT

CHANCE OF T-STORM
Lo: 77°F
Precip: 40%

SATURDAY

SUNNY

Hi: 95°F
Lo: 79°F

SUNDAY

SUNNY

Hi: 99°F
Lo: 79°F

MONDAY

MOSTLY SUNNY
Hi: 99°F
Lo: 75°F
Precip: 40%
Weather Forecast In Detail:
Forecast Issued: 757 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 upper 70s. South winds 5 to 10 mph. Chance of rain 40 percent.
Saturday...Sunny. Highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 109.
Saturday Night...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph, becoming southwest after midnight.
Sunday...Sunny. Highs in the upper 90s. West winds 5 to 10 mph. Heat index values up to 111.
Sunday Night...Partly cloudy. Lows in the upper 70s. Southwest winds 5 to 10 mph. Heat index values up to 105 early in the evening.
Monday...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. Chance of rain 40 percent. Heat index values up to 115.
Monday Night...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 70s. Chance of rain 40 percent. Heat index values up to 105 early in the evening.
Tuesday And Tuesday Night...Mostly cloudy. Showers and thunderstorms likely. Highs in the lower 90s. Lows in the upper 70s. Chance of rain 70 percent. Heat index values up to 110.
Wednesday And Wednesday Night...Partly cloudy. Showers and thunderstorms likely. Highs in the upper 80s. Lows in the upper 70s. Chance of rain 70 percent.
Thursday And Thursday Night...Partly cloudy. A chance of showers and thunderstorms. Highs around 90. Lows in the mid 70s. Chance of rain 50 percent.
Friday...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 40 percent. Heat index values up to 105.
SHARE THIS PAGE: