Current conditions at
The Florida Keys - Marathon International Airport (KMTH)
Lat: 24.73°NLon: 81.05°WElev: 13ft.
Fair
88°F
31°C
| Humidity | 70% |
| Wind Speed | E 9 mph |
| Barometer | 29.98 in (1015.1 mb) |
| Dewpoint | 77°F (25°C) |
| Visibility | 10.00 mi |
| Heat Index | 100°F (38°C) |
| Last update | 4 Oct 2:53 pm EDT |
Extended Forecast for
23 Miles NNW Long Key FL
This Afternoon

High: 87 °F
Sunny
Tonight

Low: 76 °F
Partly Cloudy
Monday

High: 87 °F
Mostly Sunny
Monday Night
Low: 75 °F
Slight Chance
T-storms then
Mostly CloudyTuesday
High: 86 °F
Mostly Sunny
then Slight
Chance
T-stormsTuesday Night

Low: 76 °F
Slight Chance
T-stormsWednesday

High: 85 °F
Chance
T-stormsWednesday Night

Low: 77 °F
Chance
T-stormsThursday

High: 85 °F
Chance
T-storms
Detailed Forecast
This Afternoon
Sunny, with a high near 87. East wind around 10 mph.
Tonight
Partly cloudy, with a low around 76. East wind 5 to 8 mph.
Monday
Mostly sunny, with a high near 87. East wind 3 to 7 mph.
Monday Night
A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 75. Light and variable wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am, then a slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 76. Calm wind. Chance of precipitation is 20%.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77. Southwest wind 3 to 6 mph.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85. South wind 3 to 6 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 77.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 78.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
23 Miles NNW Long Key FL
25.14°N 80.92°W
25.14°N 80.92°W
2:31 pm EDT Oct 4, 2026
3pm EDT Oct 4, 2026-6pm EDT Oct 10, 2026


