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

88°F

31°C

Humidity 75%
Wind Speed SE 10 mph
Barometer 30.10 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index103°F (39°C)
Last update 18 Jun 3:15 pm EDT
Extended Forecast for

Saint Simons GA

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Heat index values as high as 103. Southeast wind around 13 mph, with gusts as high as 20 mph.

    High: 89 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 76. South wind 7 to 13 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Juneteenth

    Juneteenth: A slight chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 90. Heat index values as high as 102. South wind 7 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 20%.

    High: 90 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly after 8pm. Partly cloudy, with a low around 78. South wind 7 to 11 mph, with gusts as high as 17 mph.

    Low: 78 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. West wind 6 to 9 mph becoming south in the afternoon.

    High: 90 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77.

    Low: 77 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.

    High: 88 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 78.

    Low: 78 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 89.

    High: 89 °F

    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Heat index values as high as 103. Southeast wind around 13 mph, with gusts as high as 20 mph.
Tonight
A 10 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 76. South wind 7 to 13 mph, with gusts as high as 20 mph.
Juneteenth
A slight chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 90. Heat index values as high as 102. South wind 7 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 20%.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly after 8pm. Partly cloudy, with a low around 78. South wind 7 to 11 mph, with gusts as high as 17 mph.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. West wind 6 to 9 mph becoming south in the afternoon.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 78.
Sunday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 89.
Sunday Night
Mostly clear, with a low around 77.
Monday
Sunny, with a high near 89.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 77.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons GA
 31.16°N 81.39°W
Last Update:
2:45 pm EDT Jun 18, 2025
Forecast Valid:
3pm EDT Jun 18, 2025-6pm EDT Jun 24, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation