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.

Overcast

77°F

25°C

Humidity 100%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 17 Aug 12:55 am EDT
Extended Forecast for

Saint Simons Island GA

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 76. Light northeast wind.

    Low: 76 °F

    Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly between 2pm and 3pm. Mostly cloudy, with a high near 88. East wind 6 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 88 °F

    T-storms
    Likely

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 76. East wind 5 to 8 mph becoming calm in the evening.

    Low: 76 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers before 2pm. Sunny, with a high near 90. Heat index values as high as 101. Northeast wind 6 to 9 mph, with gusts as high as 15 mph.

    High: 90 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. East wind around 6 mph becoming calm in the evening.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 91.

    High: 91 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 75. Chance of precipitation is 20%.

    Low: 75 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Sunny, with a high near 91. Chance of precipitation is 30%.

    High: 91 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday 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 30 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 76. Light northeast wind.
Sunday
Showers and thunderstorms likely, mainly between 2pm and 3pm. Mostly cloudy, with a high near 88. East wind 6 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Partly cloudy, with a low around 76. East wind 5 to 8 mph becoming calm in the evening.
Monday
A 20 percent chance of showers before 2pm. Sunny, with a high near 90. Heat index values as high as 101. Northeast wind 6 to 9 mph, with gusts as high as 15 mph.
Monday Night
Mostly clear, with a low around 76. East wind around 6 mph becoming calm in the evening.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 91.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 75. Chance of precipitation is 20%.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Sunny, with a high near 91. Chance of precipitation is 30%.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76.
Thursday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 93.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 76.
Friday
A 50 percent chance of showers and thunderstorms. Sunny, with a high near 92.
Friday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Saturday
Showers and thunderstorms likely. Mostly sunny, with a high near 91. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons Island GA
 31.21°N 81.39°W
Last Update:
11:56 pm EDT Aug 16, 2025
Forecast Valid:
1am EDT Aug 17, 2025-6pm EDT Aug 23, 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