June in WDW is hot and humid. How bad-well-take our typical ugly July/August days, you know those really ugly ones-now make it worse. Typical weather in summer in WDW is high 80's to mid 90's with dewpoints in the 70-77 range. That's pretty bad. Now, we've been there several times in June, it can be done. May, especially earlier in the month is still quite hot, but usually not as humid. The problems with WDW is that when the temp is comfortable, it's either school time or a major holiday. If you can't miss school, go as early in June as possible, the weather is not much different, but the crowds are much better. If you decide to go during the school year, I would suggest the first 2 weeks in December, some of the nicest and quiestest times of the year. Just avoid Thanksgiving week, the week after is great.
If you do go in summer, you need to plan around the heat. Get up early, and hit the parks at opening. It's cooler(relatively) and least crowded. Sometime around 12-2 LEAVE the park. Go back to the hotel/condo and swim, nap and enjoy the a/c. Go back to the parks in 3 or 4 hours, you'll miss the most crowded and hot time of the day. Evenings are slightly cooler, and less sun, it helps. Bring water bottles and drink til it hurts. By the time your thirsty down there, you're starting to dehydrate. It will rain, at least a little, every day. Usually the skies darken and the monsoon will start, and last mabye 30-60 minutes. Then it will be even muggier after
There are compensations to going in June, the parks have longer hours, with parades and fireworks often running every night, sometimes twice a night. Early June is also the end of the Flower and Garden Expo at Epcot, very cool. Despite the heat, we're planning another trip in June 2006. My sister's kids need to go during summer vacation, so off we go again. Here's a link to the weather averages in Olando These are the monthly averages, you can change it to the daily averages, which also shows the record highs and lows. Gives you a good idea what you're heading into. My feeling is, a hot humid trip to WDW is better then none. Just plan well for it.
If you do go in summer, you need to plan around the heat. Get up early, and hit the parks at opening. It's cooler(relatively) and least crowded. Sometime around 12-2 LEAVE the park. Go back to the hotel/condo and swim, nap and enjoy the a/c. Go back to the parks in 3 or 4 hours, you'll miss the most crowded and hot time of the day. Evenings are slightly cooler, and less sun, it helps. Bring water bottles and drink til it hurts. By the time your thirsty down there, you're starting to dehydrate. It will rain, at least a little, every day. Usually the skies darken and the monsoon will start, and last mabye 30-60 minutes. Then it will be even muggier after
There are compensations to going in June, the parks have longer hours, with parades and fireworks often running every night, sometimes twice a night. Early June is also the end of the Flower and Garden Expo at Epcot, very cool. Despite the heat, we're planning another trip in June 2006. My sister's kids need to go during summer vacation, so off we go again. Here's a link to the weather averages in Olando These are the monthly averages, you can change it to the daily averages, which also shows the record highs and lows. Gives you a good idea what you're heading into. My feeling is, a hot humid trip to WDW is better then none. Just plan well for it.
We will be there 6/4-6/15--hope to see ya'!!
Well, at least we can prepare a little anyway. June is our only option at this point so we would rather take it than leave it. After we return from vacation my husband is booked solid for the next two years. 
