Ranges generally enjoy clear sunny days all year round. This results in cool winters with
many frosty nights. Light snow has been recorded on the tallest peaks. Summers are
characteristically hot and dry but extreme heat is rare.
Most of the
area receives an average of 250 to 300mm of rain a year, with the least being about 200mm
along the edge of Lake Torrens to the west and about the same to the east near Lake Frome.
The maximum of around 350mm falls in a small area centred around Wilpena Pound.
The ranges of hills that make up the Flinders Ranges are responsible for the extension of
the 250mm isohyet for several hundred kilometres north of the Willochra Plain.Most of the rain falls during the winter months but the falls
from summer thunderstorms and monsoonal influences can be very significant in some years.