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St. Marks, FL - St. Marks River Marine Weather Forecast

Overnight - 77°F
Jun 09, 2026
0 to 5 mph ENE
Mostly Cloudy
Mostly cloudy, with a low around 77. East northeast wind 0 to 5 mph.
Tuesday - 87°F
Jun 09, 2026
5 mph SSE
Mostly Cloudy
Mostly cloudy, with a high near 87. South southeast wind around 5 mph.
Tuesday Night - 76°F
Jun 09, 2026
0 to 5 mph ENE
Partly Cloudy
Partly cloudy, with a low around 76. East northeast wind 0 to 5 mph.
Wednesday - 87°F
Jun 10, 2026
5 to 10 mph SE
Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 87. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.
Wednesday Night - 76°F
Jun 10, 2026
0 to 5 mph SSW
Slight Chance Showers And Thunderstorms then Mostly Clear
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76. South southwest wind 0 to 5 mph. Chance of precipitation is 20%.
Thursday - 87°F
Jun 11, 2026
0 to 10 mph SSE
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
Thursday Night - 76°F
Jun 11, 2026
5 to 10 mph WSW
Slight Chance Showers And Thunderstorms then Mostly Clear
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76. Chance of precipitation is 20%.
Friday - 88°F
Jun 12, 2026
0 to 10 mph WSW
Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 88. Chance of precipitation is 20%.
Friday Night - 76°F
Jun 12, 2026
5 to 10 mph WSW
Slight Chance Showers And Thunderstorms then Partly Cloudy
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 76. Chance of precipitation is 20%.
Saturday - 88°F
Jun 13, 2026
5 to 10 mph SW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 88. Chance of precipitation is 40%.
Saturday Night - 78°F
Jun 13, 2026
5 to 10 mph WSW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly cloudy, with a low around 78. Chance of precipitation is 40%.
Sunday - 88°F
Jun 14, 2026
5 to 10 mph WSW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 50%.
Sunday Night - 77°F
Jun 14, 2026
5 to 10 mph WSW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly cloudy, with a low around 77. Chance of precipitation is 50%.
Monday - 87°F
Jun 15, 2026
5 to 15 mph SW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 40%.

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