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.

Mostly Cloudy

84°F

29°C

Humidity 79%
Wind Speed SE 17 G 25 mph
Barometer 29.97 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 15 Jul 6:35 pm EDT
Extended Forecast for

Saint Simons Island GA

  • Tonight

    Tonight: A 20 percent chance of showers before 8pm. Mostly clear, with a low around 77. Breezy, with a southeast wind 14 to 16 mph, with gusts as high as 24 mph.

    Low: 77 °F

    Breezy.
    Slight Chance
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly between 2pm and 3pm. Sunny, with a high near 89. Heat index values as high as 100. South wind 10 to 14 mph, with gusts as high as 21 mph.

    High: 89 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 10 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76. Southeast wind 9 to 13 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Sunny, with a high near 91. Heat index values as high as 103. Southeast wind 7 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 30%.

    High: 91 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76. South wind 5 to 10 mph, with gusts as high as 16 mph.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 92.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 95.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 10 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 77.

    Low: 77 °F

    Slight Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of showers before 8pm. Mostly clear, with a low around 77. Breezy, with a southeast wind 14 to 16 mph, with gusts as high as 24 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly between 2pm and 3pm. Sunny, with a high near 89. Heat index values as high as 100. South wind 10 to 14 mph, with gusts as high as 21 mph.
Wednesday Night
A 10 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76. Southeast wind 9 to 13 mph, with gusts as high as 20 mph.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Sunny, with a high near 91. Heat index values as high as 103. Southeast wind 7 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 30%.
Thursday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76. South wind 5 to 10 mph, with gusts as high as 16 mph.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 92.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 95.
Saturday Night
A 10 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 77.
Sunday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 95.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Monday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons Island GA
 31.21°N 81.36°W
Last Update:
6:51 pm EDT Jul 15, 2025
Forecast Valid:
6pm EDT Jul 15, 2025-6pm EDT Jul 22, 2025
 
Forecast Discussion
 
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Additional Resources

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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