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Record Warmth Lingers; Fire Weather Concerns; Unsettled Pacific Northwest

More record warm temperatures are forecast this week from California, Southwest, Plains then into the Mississippi Valley and Southeast. The warmth combining with dry conditions may result in elevated to locally critical fire weather conditions. Meanwhile, another Pacific system will move across the Pacific Northwest with lower elevation rain and mountain snows. For Hawaii, conditions improving. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

70°F

21°C

Humidity 68%
Wind Speed E 3 mph
Barometer 30.09 in (1018.9 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 23 Mar 12:53 am EDT
Extended Forecast for

Key Colony Beach FL

  • Overnight

    Overnight: Mostly clear, with a low around 69. Northeast wind around 5 mph.

    Low: 69 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 78. Northeast wind around 5 mph becoming calm in the afternoon.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 68. North wind around 5 mph.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. North wind around 5 mph becoming calm in the afternoon.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70. Northeast wind around 5 mph.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 69. Northeast wind around 5 mph.
Monday
Sunny, with a high near 78. Northeast wind around 5 mph becoming calm in the afternoon.
Monday Night
Mostly clear, with a low around 68. North wind around 5 mph.
Tuesday
Sunny, with a high near 78. North wind around 5 mph becoming calm in the afternoon.
Tuesday Night
Partly cloudy, with a low around 70. Northeast wind around 5 mph.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 71.
Thursday
Sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 72.
Friday
Sunny, with a high near 78.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny, with a high near 78.
Saturday Night
A slight chance of showers. Mostly clear, with a low around 71. Chance of precipitation is 10%.
Sunday
A slight chance of showers. Mostly sunny, with a high near 78. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.71°N 81.02°W (Elev. 0 ft)
Last Update:
1:15 am EDT Mar 23, 2026
Forecast Valid:
1am EDT Mar 23, 2026-6pm EDT Mar 29, 2026
 
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