Climate almanac
Marathon
Florida, United States · 24.71°, -81.09°
What is the weather like in Marathon in September?
In September, Marathon is typically 84°F (29°C) during the day and 81°F (27°C) at night. The month brings about 7.0 in (177 mm) of precipitation in total.
- Average high84°F (29°C)
- Average low81°F (27°C)
- Precipitation7.0 in (177 mm)
- Clear or mostly clear days8
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)