David Hare-Scott wrote:
Dick Adams wrote:

Are there inhabitable places in Australia where the
nighttime temperature is 0 or below for 3 or more
days?

If you mean 3 or more days a year, yes there are many places
all over the southern half of the continent not on the coast
where this would apply. If you need regular low temps then
go for the southern highlands or Tasmania.

This may help:
http://www.bom.gov.au/jsp/ncc/climat...05&product=min

What did you have in mind?

The only good thing about winter is that sub-zero tempertures
kill insects. I'm told Armidale and Jindabyne have four
seasons.