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

Excessive Heat in Southern California; Tropical Storm Ian Expected to Rapidly Intensify

Excessive heat is possible through Wednesday over southern California. Strong thunderstorms may pose some risk for severe weather across parts of the upper Ohio Valley into the northern Mid Atlantic coast. Tropical Storm Ian is forecast to approach the Florida peninsula at major hurricane strength by midweek, and poses a risk of dangerous storm surge, hurricane-force winds, and heavy rainfall. Read More >

Hazardous Weather Conditions

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Partly Cloudy

84°F

29°C

Humidity 72%
Wind Speed E 6 mph
Barometer 29.91 in (1012.6 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 25 Sep 12:53 am EDT
Extended Forecast for

Islamorada FL

  • Overnight

    Overnight: A chance of showers and thunderstorms. Partly cloudy, with a low around 82. East wind around 10 mph. Chance of precipitation is 30%.

    Chance
    Showers

    Low: 82 °F

  • Sunday

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

    Chance
    Showers

    High: 90 °F

  • Sunday
    Night

    Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 81. East wind around 10 mph. Chance of precipitation is 50%.

    Chance
    Showers

    Low: 81 °F

  • Monday

    Monday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 87. East wind around 10 mph. Chance of precipitation is 70%.

    Showers
    Likely

    High: 87 °F

  • Monday
    Night

    Monday Night: Showers and possibly a thunderstorm. Low around 80. Breezy, with an east wind 10 to 20 mph. Chance of precipitation is 80%.

    Showers and
    Breezy

    Low: 80 °F

  • Tuesday

    Tuesday: Tropical storm conditions possible. Showers and possibly a thunderstorm. High near 87. Chance of precipitation is 90%.

    Tropical
    Storm
    Conditions
    Possible

    High: 87 °F

  • Tuesday
    Night

    Tuesday Night: Tropical storm conditions possible. Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 82. Chance of precipitation is 70%.

    Tropical
    Storm
    Conditions
    Possible

    Low: 82 °F

  • Wednesday

    Wednesday: Tropical storm conditions possible. Showers likely and possibly a thunderstorm. Partly sunny, with a high near 87. Chance of precipitation is 60%.

    Tropical
    Storm
    Conditions
    Possible

    High: 87 °F

  • Wednesday
    Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. Windy. Chance of precipitation is 40%.

    Chance
    Showers and
    Windy

    Low: 82 °F

Detailed Forecast

Overnight
A chance of showers and thunderstorms. Partly cloudy, with a low around 82. East wind around 10 mph. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. East wind around 5 mph. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 81. East wind around 10 mph. Chance of precipitation is 50%.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 87. East wind around 10 mph. Chance of precipitation is 70%.
Monday Night
Showers and possibly a thunderstorm. Low around 80. Breezy, with an east wind 10 to 20 mph. Chance of precipitation is 80%.
Tuesday
Tropical storm conditions possible. Showers and possibly a thunderstorm. High near 87. Chance of precipitation is 90%.
Tuesday Night
Tropical storm conditions possible. Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 82. Chance of precipitation is 70%.
Wednesday
Tropical storm conditions possible. Showers likely and possibly a thunderstorm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. Windy. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 80. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 80. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Islamorada FL
 24.93°N 80.64°W (Elev. 0 ft)
Last Update:
12:15 am EDT Sep 25, 2022
Forecast Valid:
1am EDT Sep 25, 2022-6pm EDT Oct 1, 2022
 
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