Heat Will Continue in the Mid-Atlantic and Southeast

A very hot and humid airmass will persist over portions of the mid-Atlantic and southeast. Afternoon high temperatures in these areas are forecast to reach 95 to 100 degrees with heat index values ranging from 100 to 110 degrees. Hot temperatures are also expected over portions of the west. In the central and northern Plains, strong to severe thunderstorms are possible. Read More >

Hazardous Weather Conditions

Current conditions at

Marathon, Marathon Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 7ft.

A Few Clouds

89°F

32°C

Humidity 68%
Wind Speed E 7 G 17 mph
Barometer 30.05 in (1017.5 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 26 Jul 1:53 pm EDT
Extended Forecast for

23 Miles NNW Long Key FL

  • This
    Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 88. East wind around 14 mph, with gusts as high as 18 mph.

    Slight Chance
    T-storms

    High: 88 °F

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 11pm.  Partly cloudy, with a low around 79. East wind 5 to 10 mph becoming light  after midnight.

    Chance
    T-storms

    Low: 79 °F

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 88. East wind 5 to 14 mph.

    Slight Chance
    T-storms

    High: 88 °F

  • Wednesday
    Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 81. East wind 6 to 11 mph.

    Chance
    T-storms

    Low: 81 °F

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms.  Partly sunny, with a high near 87. Breezy, with an east wind 13 to 16 mph, with gusts as high as 21 mph.

    Chance
    T-storms and
    Breezy

    High: 87 °F

  • Thursday
    Night

    Thursday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 81. Southeast wind 9 to 11 mph.

    Slight Chance
    T-storms

    Low: 81 °F

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 89. Southeast wind 8 to 10 mph.

    Slight Chance
    T-storms

    High: 89 °F

  • Friday
    Night

    Friday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 80. East wind 6 to 8 mph.

    Slight Chance
    T-storms

    Low: 80 °F

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 88. East wind 8 to 10 mph.

    Chance
    T-storms

    High: 88 °F

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. East wind around 14 mph, with gusts as high as 18 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 11pm. Partly cloudy, with a low around 79. East wind 5 to 10 mph becoming light after midnight.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. East wind 5 to 14 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 81. East wind 6 to 11 mph.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. Breezy, with an east wind 13 to 16 mph, with gusts as high as 21 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 81. Southeast wind 9 to 11 mph.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Southeast wind 8 to 10 mph.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80. East wind 6 to 8 mph.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. East wind 8 to 10 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 81.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Click Map For Forecast
Point Forecast:
23 Miles NNW Long Key FL
 25.14°N 80.95°W
2:01 pm EDT Jul 26, 2016
2pm EDT Jul 26, 2016-6pm EDT Aug 1, 2016
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database