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

77°F

25°C

Humidity 100%
Wind Speed Calm
Barometer 29.99 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 14 Jul 5:15 am EDT
Extended Forecast for

Saint Simons Island GA

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Light northwest wind.

    Low: 75 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 91. Heat index values as high as 105. Northwest wind 5 to 11 mph becoming east in the afternoon. Winds could gust as high as 17 mph.

    High: 91 °F

    Mostly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 76. East wind 3 to 8 mph.

    Low: 76 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 89. Heat index values as high as 102. Northeast wind 5 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%.

    High: 89 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 76. South wind around 7 mph.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 11am. Sunny, with a high near 89. Chance of precipitation is 50%.

    High: 89 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 77. Chance of precipitation is 30%.

    Low: 77 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

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

    High: 91 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Light northwest wind.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 91. Heat index values as high as 105. Northwest wind 5 to 11 mph becoming east in the afternoon. Winds could gust as high as 17 mph.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 76. East wind 3 to 8 mph.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 89. Heat index values as high as 102. Northeast wind 5 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 76. South wind around 7 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 11am. Sunny, with a high near 89. Chance of precipitation is 50%.
Wednesday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 77. Chance of precipitation is 30%.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 91.
Thursday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 91.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Saturday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 92.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons Island GA
 31.21°N 81.36°W
Last Update:
5:11 am EDT Jul 14, 2025
Forecast Valid:
5am EDT Jul 14, 2025-6pm EDT Jul 20, 2025
 
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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