midday
The mercury stood at about ninety degrees Fahrenheit in the middle of the forenoon , and it remained so until the wind chopped around to the south . An hour after the change of wind it stood at seventy degrees , and an hour later at fifty . I am told that it sometimes drops thirty degrees in half an hour , but such occurrences are unusual . `` This is a good place to say that sudden changes in the temperature are very common in Australia , and that the change from midday to midnight is far greater than any to which we are accustomed in the United States . When we have a change of twenty or thirty degrees in a single day we regard it as unusual . What would you say to one hundred and ten degrees at noon and fifty degrees at midnight ? This is quite common in the interior of Australia and not at all infrequent on the coast .