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

Hazardous Weather Conditions

Current conditions at

Brunswick, Malcolm McKinnon Airport (KSSI)

Lat: 31.15°NLon: 81.39°WElev: 20ft.

A Few Clouds

88°F

31°C

Humidity 75%
Wind Speed NE 12 G 17 mph
Barometer 29.98 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index103°F (39°C)
Last update 18 Aug 12:35 pm EDT
Extended Forecast for

Saint Simons GA

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms between 4pm and 5pm, then a slight chance of showers. Mostly sunny, with a high near 89. Heat index values as high as 100. East wind 9 to 14 mph, with gusts as high as 17 mph. Chance of precipitation is 30%.

    High: 89 °F

    Chance
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 77. East wind 7 to 9 mph.

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 90. Heat index values as high as 102. Breezy, with a northeast wind 10 to 15 mph, with gusts as high as 21 mph.

    High: 90 °F

    Sunny then
    Slight Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 77. Northeast wind around 11 mph, with gusts as high as 17 mph. Chance of precipitation is 20%.

    Low: 77 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 11am. Sunny, with a high near 91. North wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 91 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

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

    Low: 77 °F

    Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 92.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly clear, with a low around 79.

    Low: 79 °F

    Chance
    T-storms

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 2pm. Sunny, with a high near 90. Chance of precipitation is 60%.

    High: 90 °F

    Chance
    Showers then
    T-storms
    Likely

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms between 4pm and 5pm, then a slight chance of showers. Mostly sunny, with a high near 89. Heat index values as high as 100. East wind 9 to 14 mph, with gusts as high as 17 mph. Chance of precipitation is 30%.
Tonight
Mostly clear, with a low around 77. East wind 7 to 9 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 90. Heat index values as high as 102. Breezy, with a northeast wind 10 to 15 mph, with gusts as high as 21 mph.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 77. Northeast wind around 11 mph, with gusts as high as 17 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers, with thunderstorms also possible after 11am. Sunny, with a high near 91. North wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Wednesday Night
A chance of thunderstorms before 8pm. Mostly clear, with a low around 77. Chance of precipitation is 30%.
Thursday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 92.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly clear, with a low around 79.
Friday
Showers and thunderstorms likely, mainly after 2pm. Sunny, with a high near 90. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 78. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms likely. Mostly sunny, with a high near 88. Chance of precipitation is 70%.
Saturday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 77. Chance of precipitation is 60%.
Sunday
Showers and thunderstorms likely. Mostly sunny, with a high near 89. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons GA
 31.16°N 81.39°W
Last Update:
11:26 am EDT Aug 18, 2025
Forecast Valid:
12pm EDT Aug 18, 2025-6pm EDT Aug 24, 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