Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

Hazardous Weather Conditions

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

A Few Clouds

83°F

28°C

Humidity 85%
Wind Speed NE 3 mph
Barometer 29.95 in (1014.2 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 31 Aug 5:53 am EDT
Extended Forecast for

Islamorada FL

  • Today

    Today: A chance of showers and thunderstorms.  Mostly sunny, with a high near 90. East wind around 5 mph.  Chance of precipitation is 40%.

    High: 90 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms.  Partly cloudy, with a low around 83. East wind around 5 mph.  Chance of precipitation is 40%.

    Low: 83 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms.  Mostly sunny, with a high near 90. East wind around 5 mph.  Chance of precipitation is 50%.

    High: 90 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 83. East wind 5 to 10 mph.  Chance of precipitation is 30%.

    Low: 83 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms.  Mostly sunny, with a high near 89. East wind around 5 mph.  Chance of precipitation is 50%.

    High: 89 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 82. Chance of precipitation is 60%.

    Low: 82 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm.  Mostly sunny, with a high near 89. Chance of precipitation is 70%.

    High: 89 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely.  Mostly cloudy, with a low around 83. Chance of precipitation is 60%.

    Low: 83 °F

    T-storms
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms.  Mostly sunny, with a high near 88. Chance of precipitation is 50%.

    High: 88 °F

    Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. East wind around 5 mph. Chance of precipitation is 40%.
Tonight
A chance of showers and thunderstorms. Partly cloudy, with a low around 83. East wind around 5 mph. Chance of precipitation is 40%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. East wind around 5 mph. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 83. East wind 5 to 10 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. East wind around 5 mph. Chance of precipitation is 50%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 82. Chance of precipitation is 60%.
Thursday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 89. Chance of precipitation is 70%.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 83. Chance of precipitation is 60%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 83. Chance of precipitation is 50%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 83. Chance of precipitation is 50%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Islamorada FL
 24.93°N 80.62°W (Elev. 3 ft)
6:15 am EDT Aug 31, 2026
6am EDT Aug 31, 2026-6pm EDT Sep 6, 2026
 
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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