We just got back from DL. We were there Sunday 7-27, no crowds, everything was walk on, no waits until about noon then it got moderately busy. I think the longest wait for us was Spl. Mtn. about 30 min. and 30 at Monsters Inc. and 40 min. for TSMM. Temperature was cool in the morning and not to bad in the afternoon. I get hot looking at the weather channel showing red zones so for me to say it was not bad means it was nice and cool.
On Monday 7-28 it was overcast most of the morning causing it to be quite cool. It burned off by about 1 p.m. but it was still nice and cool. Crowd wise again not too bad, we used lots of FPs. One of our long waits was at Heimlick's choo choo about 20 min. and the sun wheel about 20 min.
Tuesday 7-29 was warm maybe mid 80's and very crowded. Got to DL about 9:30. We got on Buzz no wait, HISTA, and the Tiki Room. We left after the earthquake and did not come back till 9 p.m. so I can't tell how the crowds were while they checked everything out. But when we did come back at 9 we were only able to get on SM (FP 20 min. wait) and ST (standby 30 min. wait) as everything else had massive lines, over 45 min. on most of the E ticket attractions.
Some friends of ours were there on Wed. 7-30 and reported that it was very busy and hot they could hardly move about and Thur. 7-31 was nice and cool and that it was empty, they could not believe how empty it was.