last year it was around 90 all week (10/5 - 10/12). I think this may have been a touch higher than average for this time of year. I would definately plan on at least mid 80's daytime and high 60's low 70's night. Quick search at weather.com show average for the week is low 67 to high 87. What you should do is about 1 week before leaving, check the long range forecast for the Orlando area.