About Mount Isa, Queensland

Mount Isa, in Queensland, Australia, is home to roughly 18,300 people in the Australia/Brisbane time zone at 20.7°S latitude.

Recent weather here gives a sense of typical conditions: in 2025, Mount Isa recorded a mean annual temperature of 77°F, ranging from 45°F lows in June to 109°F highs in January, with about 29 inches of precipitation across the year.