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

77°F

25°C

Humidity 100%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 4 Aug 12:15 am EDT
Extended Forecast for

Saint Simons Island GA

  • Overnight

    Overnight: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Southeast wind 3 to 6 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 74 °F

    Chance
    Showers

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 87. Light and variable wind becoming east 5 to 10 mph in the morning. New rainfall amounts between a half and three quarters of an inch possible.

    High: 87 °F

    Chance
    T-storms

  • Monday Night

    Monday 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. Partly cloudy, with a low around 76. East wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 76 °F

    T-storms
    Likely then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 90. Heat index values as high as 103. Calm wind becoming southeast 5 to 8 mph in the afternoon. Chance of precipitation is 70%.

    High: 90 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Tuesday Night

    Tuesday 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 75. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 75 °F

    T-storms
    Likely then
    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 89. Chance of precipitation is 70%.

    High: 89 °F

    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 74. Chance of precipitation is 60%.

    Low: 74 °F

    T-storms
    Likely then
    Showers
    Likely

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 70%.

    High: 88 °F

    T-storms
    Likely

  • Thursday Night

    Thursday 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 73. Chance of precipitation is 60%.

    Low: 73 °F

    T-storms
    Likely then
    Showers
    Likely

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Southeast wind 3 to 6 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 50 percent chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 87. Light and variable wind becoming east 5 to 10 mph in the morning. New rainfall amounts between a half and three quarters of an inch possible.
Monday 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. Partly cloudy, with a low around 76. East wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 90. Heat index values as high as 103. Calm wind becoming southeast 5 to 8 mph in the afternoon. Chance of precipitation is 70%.
Tuesday 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 75. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Wednesday
A chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 89. Chance of precipitation is 70%.
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 74. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 70%.
Thursday 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 73. Chance of precipitation is 60%.
Friday
Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 70%.
Friday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 75. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 89. Chance of precipitation is 70%.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Sunday
Showers and thunderstorms likely. Sunny, with a high near 90. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons Island GA
 31.21°N 81.36°W
Last Update:
11:42 pm EDT Aug 3, 2025
Forecast Valid:
12am EDT Aug 4, 2025-6pm EDT Aug 10, 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