Wunderground.com
Search Orlando then halfway down the page there is a section titled History & Almanac, there you can look at historical weather.
This gives you absolutely no indication for the same date this year or next year. Florida weather varies more than anywhere I know, one New years eve can be freezing and need hats scarves and gloves, the next year shorts and T-shirts, not just a few degrees different. Although in August I can tell you it will be hot.