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.

Partly Cloudy

81°F

27°C

Humidity 94%
Wind Speed Calm
Barometer 30.08 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 10 Sep 8:35 am EDT
Extended Forecast for

Saint Simons Island GA

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 91. Heat index values as high as 103. Calm wind becoming southeast 5 to 9 mph in the afternoon.

    High: 91 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 75. Southwest wind 3 to 7 mph.

    Low: 75 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 92. Heat index values as high as 103. Calm wind becoming south 5 to 7 mph in the morning.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 75. South wind around 6 mph becoming calm in the evening.

    Low: 75 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 91. Calm wind becoming southeast 5 to 8 mph in the afternoon.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 75.

    Low: 75 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 92.

    High: 92 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 75.

    Low: 75 °F

    Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 91.

    High: 91 °F

    Chance
    T-storms

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 91. Heat index values as high as 103. Calm wind becoming southeast 5 to 9 mph in the afternoon.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 75. Southwest wind 3 to 7 mph.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 92. Heat index values as high as 103. Calm wind becoming south 5 to 7 mph in the morning.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 75. South wind around 6 mph becoming calm in the evening.
Saturday
A 50 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 91. Calm wind becoming southeast 5 to 8 mph in the afternoon.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 75.
Sunday
A 50 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 92.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 75.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 91.
Monday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 75. Chance of precipitation is 30%.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons Island GA
 31.21°N 81.36°W
Last Update:
5:51 am EDT Sep 10, 2026
Forecast Valid:
8am EDT Sep 10, 2026-6pm EDT Sep 16, 2026
 
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Additional Resources

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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