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.

Fair

82°F

28°C

Humidity 100%
Wind Speed SW 5 mph
Barometer 30.10 in
Dewpoint 82°F (28°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 5 Aug 7:55 am EDT
Extended Forecast for

Saint Simons GA

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Sunny, with a high near 91. Heat index values as high as 105. Light and variable wind becoming east 5 to 9 mph in the morning.

    High: 91 °F

    Sunny then
    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 9pm. Low around 76. Southeast wind around 6 mph becoming calm after midnight. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 76 °F

    T-storms then
    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 89. Light and variable wind becoming east 5 to 9 mph in the morning. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 77. East wind 3 to 6 mph. Chance of precipitation is 70%.

    Low: 77 °F

    T-storms
    Likely then
    Showers
    Likely

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 87. Northeast wind 7 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 80%.

    High: 87 °F

    Showers
    Likely then
    T-storms

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 77. Chance of precipitation is 80%.

    Low: 77 °F

    T-storms then
    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 87. Chance of precipitation is 80%.

    High: 87 °F

    Showers
    Likely then
    T-storms

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 77. Chance of precipitation is 80%.

    Low: 77 °F

    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A chance of showers before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 70%.

    High: 88 °F

    Showers
    Likely then
    T-storms
    Likely

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Sunny, with a high near 91. Heat index values as high as 105. Light and variable wind becoming east 5 to 9 mph in the morning.
Tonight
Showers and thunderstorms, mainly before 9pm. Low around 76. Southeast wind around 6 mph becoming calm after midnight. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 89. Light and variable wind becoming east 5 to 9 mph in the morning. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 77. East wind 3 to 6 mph. Chance of precipitation is 70%.
Thursday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 87. Northeast wind 7 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 80%.
Thursday Night
Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 77. Chance of precipitation is 80%.
Friday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 87. Chance of precipitation is 80%.
Friday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 77. Chance of precipitation is 80%.
Saturday
A chance of showers before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 70%.
Saturday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 78. Chance of precipitation is 60%.
Sunday
Showers and thunderstorms likely. Mostly sunny, with a high near 90. Chance of precipitation is 70%.
Sunday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 79. Chance of precipitation is 60%.
Monday
Showers and thunderstorms likely. Mostly sunny, with a high near 90. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons GA
 31.16°N 81.39°W
Last Update:
1:26 am EDT Aug 5, 2025
Forecast Valid:
8am EDT Aug 5, 2025-6pm EDT Aug 11, 2025
 
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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