Current conditions at
The Florida Keys - Marathon International Airport (KMTH)
Lat: 24.73°NLon: 81.05°WElev: 13ft.
A Few Clouds
84°F
29°C
| Humidity | 82% |
| Wind Speed | E 10 mph |
| Barometer | 29.96 in (1014.4 mb) |
| Dewpoint | 78°F (26°C) |
| Visibility | 10.00 mi |
| Heat Index | 95°F (35°C) |
| Last update | 4 Oct 5:53 am EDT |
Extended Forecast for
23 Miles NNW Long Key FL
Today

High: 87 °F
Mostly Sunny
Tonight

Low: 76 °F
Partly Cloudy
Monday

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

High: 86 °F
Chance
T-stormsTuesday Night

Low: 76 °F
Chance
T-stormsWednesday

High: 86 °F
Chance
T-stormsWednesday Night

Low: 77 °F
Chance
T-stormsThursday

High: 84 °F
Chance
T-storms
Detailed Forecast
Today
Mostly sunny, with a high near 87. East wind 8 to 10 mph.
Tonight
Partly cloudy, with a low around 76. East wind 5 to 8 mph.
Monday
Mostly sunny, with a high near 87. Southeast wind 3 to 7 mph.
Monday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 75. Light east wind. Chance of precipitation is 20%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 86. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 76. Calm wind. Chance of precipitation is 30%.
Wednesday
A chance of showers, with thunderstorms also possible after 8am. Mostly sunny, with a high near 86. Light south wind becoming southwest 5 to 10 mph in the morning. Chance of precipitation is 50%.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77. South wind around 6 mph.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84. South wind 5 to 8 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 77.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78.
Saturday
A 30 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
4:17 am EDT Oct 4, 2026
6am EDT Oct 4, 2026-6pm EDT Oct 10, 2026


