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Marathon, Florida Weather Forecast
Marathon, Florida Weather
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Weather Forecast for Marathon, Florida : Monroe County
Issued: 11:15 pm EST Dec 16, 2025 Latitude: 24.7137524 Longitude: -81.0903512 View on Google Maps

MouseOver for Detail Forecast
Tonight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
10% chance of rain on Tonight 10% chance of rain on Wednesday 30% chance of on Thursday 20% chance of on Friday Mostly Sunny on Saturday 10% chance of rain on Sunday 10% chance of rain on Monday 10% chance of rain on Tuesday
Low: 71°F High: 77°F High: 80°F High: 79°F High: 78°F High: 79°F High: 78°F High: 78°F
Low: 72°F Low: 73°F Low: 70°F Low: 72°F Low: 72°F Low: 72°F  
Rain Rain Partly Sunny Partly Sunny Mostly Sunny Rain Rain Rain
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Current Conditions at
MARATHON KEY ARPT - (KMTH)
72°
Partly Cloudy
as of 10:53 PM EST
Rel. Humidity: 73%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.11 in.
Flight Rule: VFR
Wind Data
9 MPH
060° Northeast
Cloud Level(s): Few at 3700ft, Scattered at 4500ft
Current Conditions at
KEY WEST NAS - (KNQX)
70°
Clear
as of 10:53 PM EST
Rel. Humidity: 73%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
10 MPH
050° Northeast
Cloud Level(s): Clear
Current Conditions at
KEY WEST INTL - (KEYW)
70°
Clear
as of 10:53 PM EST
Rel. Humidity: 83%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
8 MPH
040° Northeast
Cloud Level(s): Clear
Current Conditions at
HOMESTEAD AFB - (KHST)
72°
Partly Cloudy
as of 10:55 PM EST
Rel. Humidity: 68%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
9 MPH
060° Northeast
Cloud Level(s): Scattered at 5000ft
10% chance of rain Tonight Tonight... A slight chance of showers. Partly cloudy, with a low around 71. East wind 10 to 15 mph. Chance of precipitation is 10%.
10% chance of rain Wednesday Wednesday... A slight chance of showers. Mostly sunny, with a high near 77. East wind 10 to 15 mph. Chance of precipitation is 10%.
10% chance of rain Wednesday Night Wednesday Night... A slight chance of showers. Partly cloudy, with a low around 72. East wind around 15 mph. Chance of precipitation is 10%.
30% chance of Thursday Thursday... A chance of showers. Partly sunny, with a high near 80. Southeast wind 10 to 15 mph. Chance of precipitation is 30%.
30% chance of rain Thursday Night Thursday Night... A chance of showers. Mostly cloudy, with a low around 73. Southeast wind around 5 mph becoming southwest after midnight. Chance of precipitation is 30%.
20% chance of Friday Friday... A slight chance of showers. Partly sunny, with a high near 79. Chance of precipitation is 20%.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 70.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 78.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 72.
10% chance of rain Sunday Sunday... A slight chance of showers. Sunny, with a high near 79. Chance of precipitation is 10%.
10% chance of rain Sunday Night Sunday Night... A slight chance of showers. Partly cloudy, with a low around 72. Chance of precipitation is 10%.
10% chance of rain Monday Monday... A slight chance of showers. Mostly sunny, with a high near 78. Chance of precipitation is 10%.
10% chance of rain Monday Night Monday Night... A slight chance of showers. Partly cloudy, with a low around 72. Chance of precipitation is 10%.
10% chance of rain Tuesday Tuesday... A slight chance of showers. Sunny, with a high near 78. Breezy. Chance of precipitation is 10%.
Current Radar Image


Sun Almanac for Marathon, Florida
Sunrise: 07:02 AM
Sunset: 5:38 PM
Civil Sunrise:06:37 AM
Civil Sunset: 6:03 PM
Nautical Sunrise: 06:09 AM
Nautical Sunset: 6:32 PM
Astro Sunrise: 05:41 AM
Astro Sunset: 7:00 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.