Range of temperatures in Australian outback?

Answer 1

Essentially, the Australian outback is characterised by hot, dry days in summer, and dry winters with cold nights.

However, in a continent as vast as Australia, there are variations. In the north, for example, the outback invariably experiences monsoonal rains in summer.

Answer 2

Temperatures in the Australian outback vary greatly, from below freezing at night in mid-Winter to well above 45 degrees Celsius during the day in Summer.