It's normal for clones to wilt a little durring the first two days after you stick them. Depending on strain, differing temperatures and humidity, health of mother, size of cutting, and cell wall strength they will wilt a little, or not. If you get a embolism (air bubble in the stem) your clone will wilt to death. This is more likely if your cutting has a large stele (center of stem where the sap runs up the plant) then you are more likely to develop an embolism. You can avoid this by taking a cutting, emerging it in plain water, and making a final cut underwater.
You want the humidity to be about 80% at this time. Leaving your clones in standing water is a BAD idea.
After the first two days clones should have heeled the cut you made and not need such high humidity(but they like it).
You want to have the rooting medium at about 78-80 degrees until you have roots. The ambient temperature should be just 2 degrees cooler.
I clone plants for clubs in california.