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Rock Islands Marine Weather Forecast

This Afternoon - 79°F
Dec 05, 2025
10 to 15 mph SW
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 4pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 79, with temperatures falling to around 68 in the afternoon. Southwest wind 10 to 15 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Tonight - 57°F
Dec 05, 2025
0 to 10 mph NNW
Chance Showers And Thunderstorms then Patchy Fog
A chance of showers and thunderstorms before 10pm, then a slight chance of showers and thunderstorms between 10pm and 11pm, then patchy fog and a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 57. North northwest wind 0 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Saturday - 63°F
Dec 06, 2025
5 to 10 mph N
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A slight chance of showers and thunderstorms before 11am, then showers and thunderstorms likely. Mostly cloudy, with a high near 63. North wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Saturday Night - 56°F
Dec 06, 2025
5 to 10 mph ENE
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a low around 56. East northeast wind 5 to 10 mph. Chance of precipitation is 80%.
Sunday - 65°F
Dec 07, 2025
5 mph E
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy, with a high near 65. East wind around 5 mph. Chance of precipitation is 70%.
Sunday Night - 58°F
Dec 07, 2025
5 mph NNE
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy, with a low around 58. Chance of precipitation is 60%.
Monday - 65°F
Dec 08, 2025
5 to 15 mph NNW
Chance Showers And Thunderstorms then Partly Sunny
A chance of showers and thunderstorms before 7am. Partly sunny, with a high near 65. Chance of precipitation is 30%.
Monday Night - 46°F
Dec 08, 2025
10 to 15 mph NNE
Partly Cloudy
Partly cloudy, with a low around 46.
Tuesday - 59°F
Dec 09, 2025
10 mph NE
Mostly Sunny
Mostly sunny, with a high near 59.
Tuesday Night - 45°F
Dec 09, 2025
5 mph NE
Partly Cloudy
Partly cloudy, with a low around 45.
Wednesday - 62°F
Dec 10, 2025
5 mph NNW
Sunny
Sunny, with a high near 62.
Wednesday Night - 54°F
Dec 10, 2025
5 mph WSW
Mostly Clear
Mostly clear, with a low around 54.
Thursday - 65°F
Dec 11, 2025
5 to 15 mph WSW
Sunny
Sunny, with a high near 65.
Thursday Night - 53°F
Dec 11, 2025
5 to 10 mph SW
Partly Cloudy
Partly cloudy, with a low around 53.

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