These are the temps for Vero Beach, which is a southeast of WDW. Don't have any crowd stats, but Steve Birmbaum's book has a nice breakdown of crowd stats for WDW over the year.
One February, it was in the 80s all the time. Last February, we were shivering all the time!?! Your only real options is to check a weather site online, a week or so before you go. I'm leaving this afternoon, and weather.com has the temps a couple degrees higher than it's been showing all week. So - you never know. In the end, your in Walt Disney World - who really cares what the weather's like!?!
Weather Underground provides stats for weather anywhere in the States. Here is the link with the dates for the Feb 1 - Feb 8. You can change the dates to match your trip on the right side of the page,