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Largo Sound, FL - Key Largo Marine Weather Forecast

Station BWSF1 - Blackwater Sound, FL

September 20, 2026 12:00 pm EDT
Location: 25.178N 80.438W
Water Temperature: 86.0°F (30.0°C)
Tide: 0.36 ft


This Afternoon - 87°F
Sep 20, 2026
5 mph S
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Partly sunny, with a high near 87. South wind around 5 mph. Chance of precipitation is 60%.
Tonight - 80°F
Sep 20, 2026
0 to 5 mph S
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 80. South wind 0 to 5 mph. Chance of precipitation is 60%.
Monday - 87°F
Sep 21, 2026
5 to 10 mph SW
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A chance of showers and thunderstorms before 8am, then showers and thunderstorms likely. Partly sunny, with a high near 87. Southwest wind 5 to 10 mph. Chance of precipitation is 60%.
Monday Night - 80°F
Sep 21, 2026
5 to 10 mph S
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Partly cloudy, with a low around 80. South wind 5 to 10 mph. Chance of precipitation is 60%.
Tuesday - 87°F
Sep 22, 2026
5 to 10 mph S
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Partly sunny, with a high near 87. South wind 5 to 10 mph. Chance of precipitation is 70%.
Tuesday Night - 81°F
Sep 22, 2026
10 mph S
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy, with a low around 81. Chance of precipitation is 70%.
Wednesday - 87°F
Sep 23, 2026
5 to 10 mph S
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy, with a high near 87. Chance of precipitation is 70%.
Wednesday Night - 80°F
Sep 23, 2026
5 mph S
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 80. Chance of precipitation is 70%.
Thursday - 87°F
Sep 24, 2026
5 mph SE
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A chance of showers and thunderstorms before 8am, then showers and thunderstorms likely. Partly sunny, with a high near 87. Chance of precipitation is 70%.
Thursday Night - 79°F
Sep 24, 2026
5 mph N
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 79. Chance of precipitation is 70%.
Friday - 88°F
Sep 25, 2026
5 mph NE
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A chance of showers and thunderstorms before 8am, then showers and thunderstorms likely. Mostly sunny, with a high near 88. Chance of precipitation is 70%.
Friday Night - 80°F
Sep 25, 2026
5 mph NE
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 80. Chance of precipitation is 70%.
Saturday - 87°F
Sep 26, 2026
5 mph NE
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A chance of showers and thunderstorms before 8am, then showers and thunderstorms likely. Mostly sunny, with a high near 87. Chance of precipitation is 70%.
Saturday Night - 78°F
Sep 26, 2026
5 mph NE
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 78. Chance of precipitation is 70%.

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