National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Extreme Heat Risk this Week

Extreme heat and little overnight relief will lead to an extreme risk for heat-related impacts through the rest of the week. Extreme Heat Warning in effect on Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Brunswick, Malcolm McKinnon Airport (KSSI)

Lat: 31.15°NLon: 81.39°WElev: 20ft.

Partly Cloudy

86°F

30°C

Humidity 79%
Wind Speed Vrbl 7 mph
Barometer 29.95 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 19 Aug 9:35 pm EDT
Extended Forecast for

Saint Simons GA

Heat Advisory August 20, 11:00am until August 20, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 78. South wind around 6 mph becoming west after midnight.

    Low: 78 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 96. Heat index values as high as 110. West wind 5 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 16 mph.

    High: 96 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 78. South wind 7 to 9 mph.

    Low: 78 °F

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Heat index values as high as 109. Southwest wind 6 to 13 mph becoming south in the afternoon. Winds could gust as high as 18 mph.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 77. Southwest wind 6 to 10 mph.

    Low: 77 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Showers and thunderstorms likely after 2pm. Partly sunny, with a high near 92. Chance of precipitation is 60%.

    High: 92 °F

    Mostly Sunny
    then T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 76. Chance of precipitation is 60%.

    Low: 76 °F

    T-storms
    Likely then
    Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny
    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 76.

    Low: 76 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 78. South wind around 6 mph becoming west after midnight.
Thursday
Sunny and hot, with a high near 96. Heat index values as high as 110. West wind 5 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 16 mph.
Thursday Night
Partly cloudy, with a low around 78. South wind 7 to 9 mph.
Friday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Heat index values as high as 109. Southwest wind 6 to 13 mph becoming south in the afternoon. Winds could gust as high as 18 mph.
Friday Night
A 40 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 77. Southwest wind 6 to 10 mph.
Saturday
Showers and thunderstorms likely after 2pm. Partly sunny, with a high near 92. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 76. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 76.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 94.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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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:
8:01 pm EDT Aug 19, 2026
Forecast Valid:
10pm EDT Aug 19, 2026-6pm EDT Aug 26, 2026
 
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