Areas of Showers and Thunderstorms to Start the Work Week
Areas of rain and thunderstorms are forecast Monday across the central and eastern states. Some mixed rain and snow is possible in the high Sierra Mountains. Heavy to excessive rain may bring flooding in the central Appalachians. 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
78°F
26°C
| Humidity | 90% |
| Wind Speed | NE 5 mph |
| Barometer | 29.90 in (1012.4 mb) |
| Dewpoint | 75°F (24°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 20 Sep 8:53 pm EDT |
Extended Forecast for
Key Colony Beach FL
Tonight
Low: 80 °F
Showers
LikelyMonday
High: 87 °F
Showers
LikelyMonday Night
Low: 81 °F
Showers
LikelyTuesday
High: 88 °F
Showers
LikelyTuesday Night
Low: 81 °F
Showers
LikelyWednesday
High: 87 °F
Showers
LikelyWednesday Night
Low: 80 °F
Showers
LikelyThursday
High: 87 °F
Showers
LikelyThursday Night
Low: 81 °F
Chance
T-storms
Detailed Forecast
Tonight
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 80. Light and variable wind becoming south 5 to 10 mph after midnight. Chance of precipitation is 60%.
Monday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 87. South wind around 10 mph. Chance of precipitation is 60%.
Monday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 81. South wind 10 to 15 mph. Chance of precipitation is 70%.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. South wind 5 to 10 mph. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 81. Southeast wind 10 to 15 mph. Chance of precipitation is 70%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 87. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 80. Chance of precipitation is 70%.
Thursday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 81. Chance of precipitation is 40%.
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 81. Chance of precipitation is 50%.
Saturday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 87. Chance of precipitation is 60%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 80. Chance of precipitation is 50%.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 87. Chance of precipitation is 70%.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Key Colony Beach FL
24.71°N 81.02°W (Elev. 0 ft)
24.71°N 81.02°W (Elev. 0 ft)
9:15 pm EDT Sep 20, 2026
9pm EDT Sep 20, 2026-6pm EDT Sep 27, 2026
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