National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

A Few Clouds

85°F

29°C

Humidity 82%
Wind Speed SE 7 mph
Barometer 29.95 in (1014.2 mb)
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 19 May 7:53 am EDT
Extended Forecast for

27 Miles NW Long Key FL

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 86. Heat index values as high as 100. South wind 7 to 9 mph becoming southwest in the afternoon.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 79. Northwest wind around 6 mph becoming southwest after midnight. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 79 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. West wind 6 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly clear, with a low around 78. Northwest wind 6 to 8 mph.

    Low: 78 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 11am. Sunny, with a high near 84. North wind 5 to 7 mph becoming west in the afternoon. Chance of precipitation is 40%.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly clear, with a low around 79. West wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 40%.

    Low: 79 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Sunny, with a high near 85. Northeast wind 5 to 7 mph becoming south in the afternoon.

    High: 85 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms. Mostly clear, with a low around 79. East wind around 6 mph.

    Low: 79 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 85. Southeast wind 6 to 8 mph.

    High: 85 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 86. Heat index values as high as 100. South wind 7 to 9 mph becoming southwest in the afternoon.
Tonight
A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 79. Northwest wind around 6 mph becoming southwest after midnight. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. West wind 6 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly clear, with a low around 78. Northwest wind 6 to 8 mph.
Tuesday
A chance of showers, with thunderstorms also possible after 11am. Sunny, with a high near 84. North wind 5 to 7 mph becoming west in the afternoon. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly clear, with a low around 79. West wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 40%.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Sunny, with a high near 85. Northeast wind 5 to 7 mph becoming south in the afternoon.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly clear, with a low around 79. East wind around 6 mph.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 85. Southeast wind 6 to 8 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 80.
Friday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 85.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 81.
Saturday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 86.
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Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
27 Miles NW Long Key FL
 25.13°N 81.08°W
Last Update:
7:17 am EDT May 19, 2024
Forecast Valid:
8am EDT May 19, 2024-6pm EDT May 25, 2024
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation