Fort Jefferson, Florida Weather
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Weather Forecast for Fort Jefferson, Florida : Monroe County
Issued: 2:15 pm EDT Aug 25, 2025 Latitude: 24.6279301 Longitude: -82.8728981 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Tuesday Wednesday Thursday Friday Saturday Sunday
10% chance of thunderstorms on This Afternoon 20% chance of thunderstorms on Tonight 10% chance of thunderstorms on Tuesday 20% chance of thunderstorms on Wednesday 30% chance of thunderstorms on Thursday 30% chance of thunderstorms on Friday 40% chance of thunderstorms on Saturday 40% chance of thunderstorms on Sunday
High: 88°F Low: 85°F High: 88°F High: 88°F High: 88°F High: 88°F High: 88°F High: 87°F
Low: 84°F Low: 84°F Low: 84°F Low: 83°F Low: 83°F  
Thunderstorms Thunderstorms Thunderstorms Thunderstorms Thunderstorms Thunderstorms Thunderstorms Thunderstorms
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Current Conditions at
KEY WEST INTL - (KEYW)
90°
Feels like 102°F
Mostly Clear
as of 1:53 PM EDST
Rel. Humidity: 66%
Dew Point: 77°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
7 MPH
140° Southeast
Cloud Level(s): Few at 3000ft
Current Conditions at
KEY WEST NAS - (KNQX)
90°
Feels like 99°F
Mostly Clear
as of 1:53 PM EDST
Rel. Humidity: 62%
Dew Point: 75°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
8 MPH
170° South
Cloud Level(s): Few at 3000ft, Few at 25000ft
Current Conditions at
MARATHON KEY ARPT - (KMTH)
90°
Feels like 99°F
Clear
as of 1:53 PM EDST
Rel. Humidity: 62%
Dew Point: 75°F
Visibility: 9 Miles
Pressure: 30.04 in.
Flight Rule: VFR
Wind Data
5 MPH
140° Southeast
Cloud Level(s): Clear
Current Conditions at
NAPLES - (KAPF)
91°
Feels like 102°F
Clear
as of 1:53 PM EDST
Rel. Humidity: 59%
Dew Point: 75°F
Visibility: 10 Miles
Pressure: 30.04 in.
Flight Rule: VFR
Wind Data
12 MPH
220° Southwest
Cloud Level(s): Clear
10% chance of thunderstorms This Afternoon This Afternoon... Isolated showers and thunderstorms. Sunny, with a high near 88. Southeast wind around 5 mph. Chance of precipitation is 10%.
20% chance of thunderstorms Tonight Tonight... Isolated showers and thunderstorms. Partly cloudy, with a low around 85. North wind 5 to 10 mph. Chance of precipitation is 20%.
10% chance of thunderstorms Tuesday Tuesday... Isolated showers and thunderstorms. Sunny, with a high near 88. East wind around 10 mph. Chance of precipitation is 10%.
10% chance of thunderstorms Tuesday Night Tuesday Night... Isolated showers and thunderstorms. Mostly clear, with a low around 84. Northeast wind around 10 mph. Chance of precipitation is 10%.
20% chance of thunderstorms Wednesday Wednesday... Isolated showers and thunderstorms. Sunny, with a high near 88. Northeast wind around 15 mph. Chance of precipitation is 20%.
30% chance of thunderstorms Wednesday Night Wednesday Night... Scattered showers and thunderstorms. Partly cloudy, with a low around 84. Chance of precipitation is 30%.
30% chance of thunderstorms Thursday Thursday... Scattered showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
30% chance of thunderstorms Thursday Night Thursday Night... Scattered showers and thunderstorms. Partly cloudy, with a low around 84. Chance of precipitation is 30%.
30% chance of thunderstorms Friday Friday... Scattered showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
40% chance of thunderstorms Friday Night Friday Night... Scattered showers and thunderstorms. Partly cloudy, with a low around 83. Chance of precipitation is 40%.
40% chance of thunderstorms Saturday Saturday... Scattered showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 40%.
40% chance of thunderstorms Saturday Night Saturday Night... Scattered showers and thunderstorms. Partly cloudy, with a low around 83. Chance of precipitation is 40%.
40% chance of thunderstorms Sunday Sunday... Scattered showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
Current Radar Image


Sun Almanac for Fort Jefferson, Florida
Sunrise: 07:10 AM
Sunset: 7:57 PM
Civil Sunrise:06:47 AM
Civil Sunset: 8:20 PM
Nautical Sunrise: 06:19 AM
Nautical Sunset: 8:47 PM
Astro Sunrise: 05:51 AM
Astro Sunset: 9:15 PM
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