HomeForecastsFlorida ForecastsOnion Key, FL - Lostmans River Marine Weather

Onion Key, FL - Lostmans River Marine Weather Forecast

Station LMRF1 - Lostmans River, FL

December 4, 2025 11:00 pm EST
Location: 25.556N 81.169W
Water Temperature: 75.9°F (24.4°C)
Tide: 0.60 ft


Overnight - 65°F
Dec 05, 2025
3 mph E
Partly Cloudy
Partly cloudy, with a low around 65. East wind around 3 mph.
Friday - 83°F
Dec 05, 2025
3 to 7 mph S
Sunny
Sunny. High near 83, with temperatures falling to around 78 in the afternoon. South wind 3 to 7 mph.
Friday Night - 66°F
Dec 05, 2025
3 mph SE
Partly Cloudy
Partly cloudy, with a low around 66. Southeast wind around 3 mph.
Saturday - 83°F
Dec 06, 2025
2 to 7 mph S
Mostly Sunny
Mostly sunny, with a high near 83. South wind 2 to 7 mph.
Saturday Night - 68°F
Dec 06, 2025
3 mph SE
Partly Cloudy
Partly cloudy, with a low around 68. Southeast wind around 3 mph.
Sunday - 83°F
Dec 07, 2025
2 to 8 mph S
Mostly Sunny
Mostly sunny, with a high near 83. South wind 2 to 8 mph.
Sunday Night - 69°F
Dec 07, 2025
5 mph W
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. West wind around 5 mph. Chance of precipitation is 30%.
Monday - 79°F
Dec 08, 2025
3 to 9 mph NW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a high near 79. Northwest wind 3 to 9 mph. Chance of precipitation is 30%.
Monday Night - 62°F
Dec 08, 2025
8 mph N
Slight Chance Rain Showers then Mostly Cloudy
A slight chance of rain showers before 7pm. Mostly cloudy, with a low around 62. North wind around 8 mph. Chance of precipitation is 20%.
Tuesday - 77°F
Dec 09, 2025
8 mph N
Partly Sunny
Partly sunny, with a high near 77.
Tuesday Night - 62°F
Dec 09, 2025
6 mph N
Mostly Cloudy
Mostly cloudy, with a low around 62.
Wednesday - 76°F
Dec 10, 2025
7 mph NW
Partly Sunny
Partly sunny, with a high near 76.
Wednesday Night - 62°F
Dec 10, 2025
5 mph NW
Mostly Cloudy
Mostly cloudy, with a low around 62.
Thursday - 77°F
Dec 11, 2025
5 to 8 mph NW
Mostly Sunny
Mostly sunny, with a high near 77.

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