



Heavy Rain and Thunderstorms in the Plains; Snow in the Northern Rockies
A storm system moving eastward will bring widespread showers and thunderstorms over parts of the Northern Plains to the Southern Plains and Upper Great Lakes through Friday. Heavy snow will continue over parts of the Northern Rockies. Read More >
Hazardous Weather Conditions
Current conditions at
The Florida Keys - Marathon International Airport (KMTH)
Lat: 24.73°NLon: 81.05°WElev: 13ft.
Mostly Cloudy
78°F
26°C
Humidity | 74% |
Wind Speed | NE 6 mph |
Barometer | 29.86 in (1011.1 mb) |
Dewpoint | 69°F (21°C) |
Visibility | 10.00 mi |
Heat Index | 80°F (27°C) |
Last update | 16 Oct 12:53 am EDT |
Extended Forecast for
Long Key FL
Overnight
Low: 75 °F
Mostly Clear
Thursday
High: 82 °F
Slight Chance
ShowersThursday Night
Low: 76 °F
Slight Chance
ShowersFriday
High: 82 °F
Slight Chance
ShowersFriday Night
Low: 76 °F
Slight Chance
ShowersSaturday
High: 82 °F
Slight Chance
ShowersSaturday Night
Low: 78 °F
Slight Chance
ShowersSunday
High: 83 °F
Chance
ShowersSunday Night
Low: 78 °F
Chance
Showers
Detailed Forecast
Overnight
Mostly clear, with a low around 75. Northeast wind around 10 mph.
Thursday
A slight chance of showers. Sunny, with a high near 82. North wind 5 to 10 mph. Chance of precipitation is 10%.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 76. Northeast wind around 10 mph. Chance of precipitation is 20%.
Friday
A slight chance of showers. Mostly sunny, with a high near 82. Northeast wind 10 to 15 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of showers. Mostly clear, with a low around 76. East wind around 15 mph. Chance of precipitation is 20%.
Saturday
A slight chance of showers. Sunny, with a high near 82. Chance of precipitation is 10%.
Saturday Night
A slight chance of showers. Mostly clear, with a low around 78. Chance of precipitation is 20%.
Sunday
A chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Partly cloudy, with a low around 78. Chance of precipitation is 30%.
Monday
A chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 30%.
Monday Night
A slight chance of showers. Mostly clear, with a low around 77. Chance of precipitation is 20%.
Tuesday
A slight chance of showers. Sunny, with a high near 83. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers. Mostly clear, with a low around 77. Chance of precipitation is 20%.
Wednesday
A slight chance of showers. Sunny, with a high near 83. Chance of precipitation is 20%.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Long Key FL
24.83°N 80.81°W (Elev. 0 ft)
24.83°N 80.81°W (Elev. 0 ft)
1:15 am EDT Oct 16, 2025
1am EDT Oct 16, 2025-6pm EDT Oct 22, 2025