National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Brunswick, Malcolm McKinnon Airport (KSSI)

Lat: 31.15°NLon: 81.39°WElev: 20ft.

Light Rain

79°F

26°C

Humidity 84%
Wind Speed W 9 mph
Barometer 29.99 in
Dewpoint 73°F (23°C)
Visibility 7.00 mi
Heat Index83°F (28°C)
Last update 27 Aug 9:35 pm EDT
Extended Forecast for

Saint Simons Island GA

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 73. Southwest wind 3 to 6 mph.

    Low: 73 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 91. Heat index values as high as 102. Light and variable wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Mostly Sunny
    then T-storms
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 73. Southeast wind 6 to 9 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 90. Heat index values as high as 100. South wind 3 to 7 mph. Chance of precipitation is 50%.

    High: 90 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 75. Light southeast wind. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 11am, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 90. Chance of precipitation is 40%.

    High: 90 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 75. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 91.

    High: 91 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 75. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 73. Southwest wind 3 to 6 mph.
Friday
Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 91. Heat index values as high as 102. Light and variable wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 73. Southeast wind 6 to 9 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 90. Heat index values as high as 100. South wind 3 to 7 mph. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 75. Light southeast wind. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 11am, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 90. Chance of precipitation is 40%.
Sunday Night
A chance of thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 75. Chance of precipitation is 30%.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 91.
Monday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 75. Chance of precipitation is 30%.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny, with a high near 92.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
Sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons Island GA
 31.21°N 81.36°W
Last Update:
7:51 pm EDT Aug 27, 2026
Forecast Valid:
9pm EDT Aug 27, 2026-6pm EDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation