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.

Thunderstorm in Vicinity Rain

73°F

23°C

Humidity 94%
Wind Speed SW 13 mph
Barometer 29.95 in
Dewpoint 72°F (22°C)
Visibility 9.00 mi
Last update 20 Jun 6:55 pm EDT
Extended Forecast for

Saint Simons GA

  • Tonight

    Tonight: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 74. Northwest wind 5 to 7 mph becoming light and variable. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 74 °F

    T-storms
    Likely then
    Chance
    Showers

  • Sunday

    Sunday: A 10 percent chance of showers and thunderstorms after 5pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 90. West wind 6 to 8 mph becoming south in the afternoon.

    High: 90 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 77. Southwest wind around 7 mph.

    Low: 77 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 93. Heat index values as high as 105. West wind 7 to 9 mph.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 79. South wind around 8 mph.

    Low: 79 °F

    Chance
    T-storms then
    Mostly Clear

  • Tuesday

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

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. 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

  • Wednesday Night

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

    Low: 78 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 74. Northwest wind 5 to 7 mph becoming light and variable. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
A 10 percent chance of showers and thunderstorms after 5pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 90. West wind 6 to 8 mph becoming south in the afternoon.
Sunday Night
Partly cloudy, with a low around 77. Southwest wind around 7 mph.
Monday
A 30 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 93. Heat index values as high as 105. West wind 7 to 9 mph.
Monday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 79. South wind around 8 mph.
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, mainly before 8pm. 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 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92.
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 93.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons GA
 31.16°N 81.39°W
Last Update:
2:56 pm EDT Jun 20, 2026
Forecast Valid:
7pm EDT Jun 20, 2026-6pm EDT Jun 27, 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