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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 | 80% |
| Wind Speed | E 13 mph |
| Barometer | 30.00 in (1015.7 mb) |
| Dewpoint | 77°F (25°C) |
| Visibility | 10.00 mi |
| Heat Index | 94°F (34°C) |
| Last update | 14 Oct 8:53 pm EDT |
Extended Forecast for
27 Miles NNW Long Key FL
Tonight
Low: 76 °F
Slight Chance
T-storms then
Chance
ShowersThursday

High: 89 °F
Chance
T-stormsThursday Night

Low: 77 °F
Chance
T-stormsFriday
High: 89 °F
Chance
Showers then
Chance
T-stormsFriday Night

Low: 76 °F
Chance
T-stormsSaturday
High: 87 °F
Chance
T-storms then
Showers
LikelySaturday Night
Low: 74 °F
Showers
Likely then
Chance
T-stormsSunday

High: 86 °F
Showers
Likely and
BreezySunday Night

Low: 74 °F
Chance
T-storms and
Breezy
Detailed Forecast
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 4am. Mostly clear, with a low around 76. Northeast wind 5 to 9 mph, with gusts as high as 20 mph.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 89. Heat index values as high as 100. East wind 5 to 10 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 77. East wind 3 to 8 mph. Chance of precipitation is 30%.
Friday
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 89. Southeast wind 5 to 8 mph.
Friday Night
A chance of showers and thunderstorms before 5am, then a slight chance of showers. Partly cloudy, with a low around 76. Light northeast wind. Chance of precipitation is 40%.
Saturday
A slight chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Light northeast wind. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 74. Northeast wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. Breezy, with an east wind 14 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Breezy, with a northeast wind 11 to 17 mph, with gusts as high as 29 mph.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. Windy. Chance of precipitation is 60%.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. Breezy.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Wednesday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 86.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
27 Miles NNW Long Key FL
25.17°N 81.02°W
25.17°N 81.02°W
5:17 pm EDT Oct 14, 2026
9pm EDT Oct 14, 2026-6pm EDT Oct 21, 2026


