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Onion Key, FL - Lostmans River Marine Weather Forecast

Station LMRF1 - Lostmans River, FL

December 16, 2025 6:00 am EST
Location: 25.556N 81.169W
Water Temperature: 70.2°F (21.2°C)
Tide: -2.06 ft


Today - 78°F
Dec 16, 2025
12 mph NE
Sunny
Sunny. High near 78, with temperatures falling to around 73 in the afternoon. Northeast wind around 12 mph, with gusts as high as 20 mph.
Tonight - 60°F
Dec 16, 2025
6 to 10 mph NE
Mostly Clear
Mostly clear, with a low around 60. Northeast wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday - 80°F
Dec 17, 2025
6 to 9 mph E
Mostly Sunny
Mostly sunny. High near 80, with temperatures falling to around 75 in the afternoon. East wind 6 to 9 mph.
Wednesday Night - 63°F
Dec 17, 2025
7 mph E
Partly Cloudy
Partly cloudy, with a low around 63. East wind around 7 mph.
Thursday - 82°F
Dec 18, 2025
8 mph SE
Mostly Sunny then Slight Chance Rain Showers
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 82. Southeast wind around 8 mph. Chance of precipitation is 20%.
Thursday Night - 68°F
Dec 18, 2025
5 mph SE
Slight Chance Rain Showers
A slight chance of rain showers. Mostly cloudy, with a low around 68. Southeast wind around 5 mph. Chance of precipitation is 20%.
Friday - 81°F
Dec 19, 2025
2 to 7 mph NW
Slight Chance Rain Showers then Partly Sunny
A slight chance of rain showers before 7am. Partly sunny, with a high near 81. Northwest wind 2 to 7 mph. Chance of precipitation is 20%.
Friday Night - 64°F
Dec 19, 2025
7 mph N
Partly Cloudy
Partly cloudy, with a low around 64. North wind around 7 mph.
Saturday - 81°F
Dec 20, 2025
8 mph E
Mostly Sunny
Mostly sunny, with a high near 81. East wind around 8 mph.
Saturday Night - 65°F
Dec 20, 2025
6 mph E
Partly Cloudy
Partly cloudy, with a low around 65.
Sunday - 83°F
Dec 21, 2025
7 mph E
Mostly Sunny
Mostly sunny, with a high near 83.
Sunday Night - 66°F
Dec 21, 2025
6 mph E
Partly Cloudy
Partly cloudy, with a low around 66.
Monday - 82°F
Dec 22, 2025
8 mph NE
Mostly Sunny
Mostly sunny, with a high near 82.
Monday Night - 64°F
Dec 22, 2025
7 mph NE
Partly Cloudy
Partly cloudy, with a low around 64.

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