On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

Active weather from Northern Rockies to Upper Midwest

A storm system in the northern U.S. will bring a variety of weather across several states from the Northern Rockies to the Upper Midwest on Saturday. Several inches of early-season snow are forecast in the higher elevations of Idaho and western Montana. Locally-heavy rain will accompany strong thunderstorms in the northern Plains and Upper Midwest.
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Hazardous Weather Conditions

Current conditions at

Marathon, Marathon Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 7ft.

Fair

90°F

32°C

Humidity 66%
Wind Speed Vrbl 5 mph
Barometer 30.02 in (1016.6 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index103°F (39°C)
Last update 5 Sep 11:53 am EDT
Extended Forecast for

23 Miles NNW Long Key FL

  • This
    Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 5pm.  Mostly sunny, with a high near 89. West wind 3 to 7 mph.

    Chance
    T-storms

    High: 89 °F

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 79. Northwest wind 5 to 9 mph.

    Chance
    T-storms then
    Partly Cloudy

    Low: 79 °F

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the afternoon.

    Chance
    T-storms

    High: 88 °F

  • Sunday
    Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm.  Partly cloudy, with a low around 80. West wind 5 to 8 mph becoming calm  after midnight.

    Chance
    T-storms

    Low: 80 °F

  • Labor
    Day

    Labor Day: A 30 percent chance of showers and thunderstorms after 8am.  Mostly sunny, with a high near 86. South wind 3 to 6 mph.

    Chance
    Showers then
    Chance
    T-storms

    High: 86 °F

  • Monday
    Night

    Monday Night: A 30 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 79. Calm wind.

    Chance
    T-storms

    Low: 79 °F

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms.  Partly sunny, with a high near 87. Northeast wind around 9 mph becoming southeast in the afternoon.

    Chance
    T-storms

    High: 87 °F

  • Tuesday
    Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 81. East wind 6 to 8 mph.

    Slight Chance
    T-storms

    Low: 81 °F

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 89. East wind around 9 mph.

    Chance
    T-storms

    High: 89 °F

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 89. West wind 3 to 7 mph.
Tonight
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 79. Northwest wind 5 to 9 mph.
Sunday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the afternoon.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 80. West wind 5 to 8 mph becoming calm after midnight.
Labor Day
A 30 percent chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 86. South wind 3 to 6 mph.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79. Calm wind.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. Northeast wind around 9 mph becoming southeast in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 81. East wind 6 to 8 mph.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. East wind around 9 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 11pm. Partly cloudy, with a low around 81.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
  Click Map For Forecast
Point Forecast:
23 Miles NNW Long Key FL
 25.14°N 80.95°W
8:01 am EDT Sep 5, 2015
12pm EDT Sep 5, 2015-6pm EDT Sep 11, 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database