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Saint Marks, FL Marine Weather Forecast

Overnight - 77°F
Jun 13, 2026
5 mph W
Partly Cloudy
Partly cloudy, with a low around 77. West wind around 5 mph.
Saturday - 95°F
Jun 13, 2026
0 to 10 mph SW
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Mostly sunny. High near 95, with temperatures falling to around 88 in the afternoon. Heat index values as high as 109. Southwest wind 0 to 10 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Saturday Night - 79°F
Jun 13, 2026
5 to 10 mph W
Chance Showers And Thunderstorms then Mostly Cloudy
A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 79. Heat index values as high as 110. West wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunday - 95°F
Jun 14, 2026
5 to 15 mph WSW
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Mostly sunny. High near 95, with temperatures falling to around 88 in the afternoon. Heat index values as high as 109. West southwest wind 5 to 15 mph. Chance of precipitation is 50%.
Sunday Night - 79°F
Jun 14, 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 79. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Monday - 94°F
Jun 15, 2026
5 to 15 mph WSW
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A chance of showers and thunderstorms between 8am and 11am, then showers and thunderstorms likely between 11am and 5pm, then showers and thunderstorms likely. Mostly sunny, with a high near 94. Chance of precipitation is 60%.
Monday Night - 78°F
Jun 15, 2026
5 to 15 mph WSW
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
Showers and thunderstorms likely before 8pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 78. Chance of precipitation is 60%.
Tuesday - 89°F
Jun 16, 2026
10 to 15 mph WSW
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Partly sunny, with a high near 89. Chance of precipitation is 70%.
Tuesday Night - 77°F
Jun 16, 2026
5 to 10 mph WSW
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 2am, then showers and thunderstorms likely. Mostly cloudy, with a low around 77. Chance of precipitation is 70%.
Wednesday - 89°F
Jun 17, 2026
10 to 15 mph SW
Showers And Thunderstorms
Showers and thunderstorms before 2pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 89. Chance of precipitation is 80%.
Wednesday Night - 80°F
Jun 17, 2026
10 to 15 mph SSW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 80. Chance of precipitation is 40%.
Thursday - 92°F
Jun 18, 2026
10 to 15 mph SSW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 8am. Partly sunny, with a high near 92. Chance of precipitation is 40%.
Thursday Night - 81°F
Jun 18, 2026
5 to 15 mph SSW
Chance Showers And Thunderstorms then Mostly Cloudy
A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 81. Chance of precipitation is 40%.
Juneteenth - 94°F
Jun 19, 2026
5 to 10 mph SSW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 8am. Partly sunny, with a high near 94. Chance of precipitation is 30%.

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