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

82°F

28°C

Humidity 84%
Wind Speed SW 15 mph
Barometer 30.14 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 18 Jun 9:55 pm EDT
Extended Forecast for

Saint Simons GA

  • Tonight

    Tonight: Mostly cloudy, with a low around 76. South wind around 10 mph, with gusts as high as 16 mph.

    Low: 76 °F

    Mostly Cloudy

  • Juneteenth

    Juneteenth: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Increasing clouds, with a high near 92. Heat index values as high as 103. Southwest wind 7 to 13 mph becoming south in the afternoon. Winds could gust as high as 20 mph.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 75. South wind 6 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 40%.

    Low: 75 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. Heat index values as high as 105. Light and variable wind becoming south 5 to 8 mph in the afternoon.

    High: 91 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. South wind 3 to 6 mph.

    Low: 74 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

    High: 90 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 90.

    High: 90 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 76. South wind around 10 mph, with gusts as high as 16 mph.
Juneteenth
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Increasing clouds, with a high near 92. Heat index values as high as 103. Southwest wind 7 to 13 mph becoming south in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 75. South wind 6 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 40%.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. Heat index values as high as 105. Light and variable wind becoming south 5 to 8 mph in the afternoon.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. South wind 3 to 6 mph.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 74.
Sunday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 91.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 74.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 91.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 73.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons GA
 31.19°N 81.39°W
Last Update:
9:46 pm EDT Jun 18, 2025
Forecast Valid:
10pm EDT Jun 18, 2025-6pm EDT Jun 25, 2025
 
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