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

79°F

26°C

Humidity 94%
Wind Speed NW 5 mph
Barometer 29.96 in
Dewpoint 77°F (25°C)
Visibility 9.00 mi
Heat Index83°F (28°C)
Last update 5 Sep 8:55 am EDT
Extended Forecast for

Saint Simons GA

  • Today

    Today: Mostly sunny, with a high near 92. Heat index values as high as 105. West wind 5 to 7 mph becoming south in the afternoon.

    High: 92 °F

    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms, mainly between 1am and 2am. Partly cloudy, with a low around 76. West wind around 6 mph.

    Low: 76 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 4pm, then a slight chance of thunderstorms between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds and hot, with a high near 95. Heat index values as high as 109. West wind around 6 mph becoming south in the afternoon. Chance of precipitation is 30%.

    High: 95 °F

    Sunny then
    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 8pm. Low around 74. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 74 °F

    Showers

  • Labor Day

    Labor Day: Showers and possibly a thunderstorm. High near 87. Light north wind becoming east 6 to 11 mph in the morning. Winds could gust as high as 16 mph. Chance of precipitation is 90%.

    High: 87 °F

    Showers
    Likely then
    T-storms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 74. Chance of precipitation is 80%.

    Low: 74 °F

    Showers

  • Tuesday

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

    High: 87 °F

    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 60%.

    Low: 75 °F

    Showers
    Likely then
    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 8am. Partly sunny, with a high near 87. Chance of precipitation is 50%.

    High: 87 °F

    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 92. Heat index values as high as 105. West wind 5 to 7 mph becoming south in the afternoon.
Tonight
A 20 percent chance of showers and thunderstorms, mainly between 1am and 2am. Partly cloudy, with a low around 76. West wind around 6 mph.
Sunday
A slight chance of showers and thunderstorms before 4pm, then a slight chance of thunderstorms between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds and hot, with a high near 95. Heat index values as high as 109. West wind around 6 mph becoming south in the afternoon. Chance of precipitation is 30%.
Sunday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 8pm. Low around 74. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Labor Day
Showers and possibly a thunderstorm. High near 87. Light north wind becoming east 6 to 11 mph in the morning. Winds could gust as high as 16 mph. Chance of precipitation is 90%.
Monday Night
Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 74. Chance of precipitation is 80%.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 87. Breezy. Chance of precipitation is 80%.
Tuesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 60%.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 8am. Partly sunny, with a high near 87. Chance of precipitation is 50%.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 74.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons GA
 31.17°N 81.42°W
Last Update:
9:11 am EDT Sep 5, 2026
Forecast Valid:
9am EDT Sep 5, 2026-6pm EDT Sep 11, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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