1. I think that there may be the hottest in October 2006, if the highest temperature is as high as 29 degree C on 10/31. Do not forget the sunny day!
2. The temperature will become normal in early November. The weather or climate will become much cooler depends on cold fronts; I think there will be one that will come in mid-November.
3. The weather in winter is cold if and only if cold front comes and this depends on the level of cold front.
The final solution: according to HKO, the average temperature in 2006 is 26.4 degree C. This is the same as the one in 1983.