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.

Partly Cloudy

84°F

29°C

Humidity 74%
Wind Speed SE 17 G 23 mph
Barometer 29.97 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 15 Jul 6:55 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:
7pm EDT Jul 15, 2025-6pm EDT Jul 22, 2025
 
Forecast Discussion
 
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Additional Resources

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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