Climate almanac
Mount Isa
Queensland, Australia · -20.73°, 139.50°
What is the weather like in Mount Isa in September?
In September, Mount Isa is typically 88°F (31°C) during the day and 62°F (17°C) at night. The month brings about 0.5 in (12 mm) of precipitation in total.
- Average high88°F (31°C)
- Average low62°F (17°C)
- Precipitation0.5 in (12 mm)
- Clear or mostly clear days25
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)