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.

Overcast

81°F

27°C

Humidity 89%
Wind Speed SW 9 mph
Barometer 29.94 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 19 Jun 6:35 am EDT
Extended Forecast for

Saint Simons GA

  • Juneteenth

    Juneteenth: Showers and thunderstorms, mainly after noon. Some of the storms could produce heavy rainfall. High near 90. Heat index values as high as 102. Breezy, with a southwest wind 16 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 90 °F

    Breezy.
    Chance
    T-storms then
    Heavy Rain

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly between midnight and 4am. Mostly cloudy, with a low around 75. Southwest wind 9 to 13 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly after 5pm. Mostly cloudy, with a high near 90. Heat index values as high as 102. West wind 7 to 9 mph becoming north in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 77. Southwest wind 3 to 6 mph. Chance of precipitation is 60%.

    Low: 77 °F

    T-storms
    Likely then
    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. West wind 5 to 9 mph becoming east in the afternoon.

    High: 86 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 79. Chance of precipitation is 30%.

    Low: 79 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 80.

    Low: 80 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91.

    High: 91 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

Juneteenth
Showers and thunderstorms, mainly after noon. Some of the storms could produce heavy rainfall. High near 90. Heat index values as high as 102. Breezy, with a southwest wind 16 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A 40 percent chance of showers and thunderstorms, mainly between midnight and 4am. Mostly cloudy, with a low around 75. Southwest wind 9 to 13 mph, with gusts as high as 20 mph.
Saturday
Showers and thunderstorms likely, mainly after 5pm. Mostly cloudy, with a high near 90. Heat index values as high as 102. West wind 7 to 9 mph becoming north in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 77. Southwest wind 3 to 6 mph. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. West wind 5 to 9 mph becoming east in the afternoon.
Sunday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 79. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 90.
Monday Night
Partly cloudy, with a low around 80.
Tuesday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 80.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 79.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons GA
 31.16°N 81.37°W
Last Update:
2:21 am EDT Jun 19, 2026
Forecast Valid:
6am EDT Jun 19, 2026-6pm EDT Jun 25, 2026
 
Forecast Discussion
 
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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