Climate almanac
Mount Isa
Queensland, Australia · -20.73°, 139.50°
What is the weather like in Mount Isa in December?
In December, Mount Isa is typically 99°F (37°C) during the day and 77°F (25°C) at night. The month brings about 2.2 in (56 mm) of precipitation in total.
- Average high99°F (37°C)
- Average low77°F (25°C)
- Precipitation2.2 in (56 mm)
- Clear or mostly clear days19
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)