Current conditions at
The Florida Keys - Marathon International Airport (KMTH)
Lat: 24.73°NLon: 81.05°WElev: 13ft.
Fair
78°F
26°C
| Humidity | 69% |
| Wind Speed | Vrbl 5 mph |
| Barometer | 29.99 in (1015.6 mb) |
| Dewpoint | 67°F (19°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 20 Apr 4:53 am EDT |
Extended Forecast for
Key Colony Beach FL
Today
High: 81 °F
Mostly Sunny
then Chance
ShowersTonight

Low: 72 °F
Chance
ShowersTuesday

High: 77 °F
Slight Chance
Showers and
BreezyTuesday Night

Low: 72 °F
Partly Cloudy
and BreezyWednesday

High: 77 °F
Mostly Sunny
Wednesday Night

Low: 72 °F
Slight Chance
ShowersThursday

High: 77 °F
Slight Chance
ShowersThursday Night

Low: 73 °F
Slight Chance
T-stormsFriday

High: 78 °F
Slight Chance
Showers
Detailed Forecast
Today
A chance of showers after 2pm. Mostly sunny, with a high near 81. North wind around 5 mph becoming east in the afternoon. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Northeast wind around 15 mph. Chance of precipitation is 40%.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 77. Breezy, with a northeast wind around 20 mph. Chance of precipitation is 10%.
Tuesday Night
Partly cloudy, with a low around 72. Breezy, with an east wind around 20 mph.
Wednesday
Mostly sunny, with a high near 77. East wind around 15 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 72. Chance of precipitation is 10%.
Thursday
A slight chance of showers. Mostly cloudy, with a high near 77. Chance of precipitation is 10%.
Thursday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 20%.
Friday
A slight chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 10%.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 74. Chance of precipitation is 10%.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Sunny, with a high near 81.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Key Colony Beach FL
24.74°N 81.02°W (Elev. 0 ft)
24.74°N 81.02°W (Elev. 0 ft)
5:15 am EDT Apr 20, 2026
5am EDT Apr 20, 2026-6pm EDT Apr 26, 2026


