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

Coastal Flood Warnings and Heavy Rainfall this Weekend - Updated Briefing

Coastal Flood Warnings have been issued through early next week along portions of the northeast Florida Atlantic coast and within the St. Johns River basin. Dangerous marine and surf conditions will continue, with heavy rainfall possible this weekend, which may exacerbate flooding at coastal locations. Please monitor this briefing for the latest updates this weekend and early next week. Read More >

Hazardous Weather Conditions

Current conditions at

Brunswick, Malcolm McKinnon Airport (KSSI)

Lat: 31.15°NLon: 81.39°WElev: 20ft.

Overcast

75°F

24°C

Humidity 83%
Wind Speed NE 13 G 22 mph
Barometer 30.12 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 3 Oct 5:15 pm EDT
Extended Forecast for

Saint Simons Island GA

Coastal Flood Advisory October 3, 05:22pm until October 6, 05:00am
High Surf Advisory October 3, 05:22pm until October 6, 05:00am
Click here for hazard details and duration
Coastal Flood Advisory
High Surf Advisory
  •  
    Coastal Flood Advisory October 3, 05:22pm until October 6, 05:00am
    High Surf Advisory October 3, 05:22pm until October 6, 05:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 69 °F

    Slight Chance
    Showers and
    Breezy

  • Saturday

    Saturday: A 30 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 81. Breezy, with a northeast wind 11 to 17 mph, with gusts as high as 26 mph.

    High: 81 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 71. East wind 10 to 14 mph, with gusts as high as 25 mph.

    Low: 71 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Partly sunny, with a high near 82. Breezy, with an east wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely and
    Breezy

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 72. East wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 72 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.

    High: 80 °F

    Heavy Rain

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

    Low: 71 °F

    Heavy Rain

  • Tuesday

    Tuesday: A 40 percent chance of showers. Mostly sunny, with a high near 82.

    High: 82 °F

    Chance
    Showers

Detailed Forecast

Tonight
A 20 percent chance of showers after 10pm. Partly cloudy, with a low around 69. Breezy, with a northeast wind 10 to 17 mph, with gusts as high as 28 mph.
Saturday
A 30 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 81. Breezy, with a northeast wind 11 to 17 mph, with gusts as high as 26 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 71. East wind 10 to 14 mph, with gusts as high as 25 mph.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Partly sunny, with a high near 82. Breezy, with an east wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 72. East wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Monday
Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.
Monday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Tuesday
A 40 percent chance of showers. Mostly sunny, with a high near 82.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 70.
Wednesday
A slight chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 82. Chance of precipitation is 20%.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Thursday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. Breezy.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Friday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 76. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Simons Island GA
 31.21°N 81.36°W
Last Update:
1:26 pm EDT Oct 3, 2025
Forecast Valid:
5pm EDT Oct 3, 2025-6pm EDT Oct 10, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation