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

73°F

23°C

Humidity 89%
Wind Speed W 9 mph
Barometer 29.97 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 20 Jun 5:55 am EDT
Extended Forecast for

Saint Simons GA

  • Today

    Today: Showers and thunderstorms likely, mainly between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 90. Heat index values as high as 102. Southwest wind 6 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 90 °F

    Mostly Sunny
    then T-storms
    Likely

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 10pm. Mostly cloudy, with a low around 74. Northeast wind around 6 mph becoming light and variable. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 74 °F

    Showers
    Likely then
    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 90. Heat index values as high as 101. West wind 5 to 9 mph becoming south in the afternoon.

    High: 90 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms between 7pm and 8pm. Partly cloudy, with a low around 76. South wind 6 to 9 mph. Chance of precipitation is 10%.

    Low: 76 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 94. West wind 7 to 11 mph, with gusts as high as 17 mph.

    High: 94 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 77.

    Low: 77 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95.

    High: 95 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely, mainly between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 90. Heat index values as high as 102. Southwest wind 6 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 10pm. Mostly cloudy, with a low around 74. Northeast wind around 6 mph becoming light and variable. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Partly sunny, with a high near 90. Heat index values as high as 101. West wind 5 to 9 mph becoming south in the afternoon.
Sunday Night
A slight chance of showers and thunderstorms between 7pm and 8pm. Partly cloudy, with a low around 76. South wind 6 to 9 mph. Chance of precipitation is 10%.
Monday
Mostly sunny, with a high near 94. West wind 7 to 11 mph, with gusts as high as 17 mph.
Monday Night
Partly cloudy, with a low around 77.
Tuesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 78.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 78.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 91.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons GA
 31.16°N 81.39°W
Last Update:
2:21 am EDT Jun 20, 2026
Forecast Valid:
6am EDT Jun 20, 2026-6pm EDT Jun 26, 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