| NWS Forecast for: Marathon FL Issued by: National Weather Service Key West, FL Last Update: 4:15 am EDT Sep 12, 2026 | |
| Overnight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. Southeast wind around 10 mph. Chance of precipitation is 30%. Saturday: A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Southeast wind around 5 mph. Chance of precipitation is 50%. Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 82. East wind around 5 mph. Chance of precipitation is 30%. Sunday: A chance of showers and thunderstorms. Partly sunny, with a high near 90. South wind around 5 mph. Chance of precipitation is 40%. Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 82. East wind around 5 mph. Chance of precipitation is 30%. Monday: A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 30%. Monday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 40%. Tuesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 50%. Tuesday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 81. Chance of precipitation is 60%. Wednesday: Showers and possibly a thunderstorm. High near 90. Chance of precipitation is 80%. Wednesday Night: Showers and possibly a thunderstorm. Low around 81. Chance of precipitation is 80%. Thursday: Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 89. Chance of precipitation is 70%. Thursday Night: Showers and thunderstorms likely. Partly cloudy, with a low around 81. Chance of precipitation is 60%. Friday: Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 89. Chance of precipitation is 60%. | |
| Marathon FL 24.72°N 81.07°W (Elev. 7 ft) | |
Visit your local NWS office at: https://www.weather.gov/key |