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

75°F

24°C

Humidity 94%
Wind Speed Calm
Barometer 29.98 in
Dewpoint 73°F (23°C)
Visibility 8.00 mi
Last update 19 Sep 5:35 am EDT
Extended Forecast for

3 Miles S Saint Simons GA

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Light and variable wind becoming east 8 to 13 mph in the morning. Winds could gust as high as 20 mph.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 75. Southeast wind 5 to 8 mph becoming calm after midnight.

    Low: 75 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly between 11am and 2pm. Partly sunny, with a high near 88. Light and variable wind becoming east 5 to 9 mph in the morning.

    High: 88 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 10 percent chance of showers before 8pm. Partly cloudy, with a low around 75. East wind around 6 mph becoming calm in the evening.

    Low: 75 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 87. Light and variable wind becoming east 5 to 9 mph in the morning. Chance of precipitation is 40%.

    High: 87 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 75.

    Low: 75 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Mostly cloudy, with a high near 86. Chance of precipitation is 60%.

    High: 86 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75.

    Low: 75 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. Breezy. Chance of precipitation is 60%.

    High: 85 °F

    Showers
    Likely and
    Breezy

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Light and variable wind becoming east 8 to 13 mph in the morning. Winds could gust as high as 20 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 75. Southeast wind 5 to 8 mph becoming calm after midnight.
Sunday
A 40 percent chance of showers and thunderstorms, mainly between 11am and 2pm. Partly sunny, with a high near 88. Light and variable wind becoming east 5 to 9 mph in the morning.
Sunday Night
A 10 percent chance of showers before 8pm. Partly cloudy, with a low around 75. East wind around 6 mph becoming calm in the evening.
Monday
A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 87. Light and variable wind becoming east 5 to 9 mph in the morning. Chance of precipitation is 40%.
Monday Night
A 50 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 75.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Mostly cloudy, with a high near 86. Chance of precipitation is 60%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. Breezy. Chance of precipitation is 60%.
Wednesday 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 73. Breezy. Chance of precipitation is 60%.
Thursday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. Windy.
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 82. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Saint Simons GA
 31.14°N 81.39°W
Last Update:
2:21 am EDT Sep 19, 2026
Forecast Valid:
5am EDT Sep 19, 2026-6pm EDT Sep 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