Weather predictions are never 100% accurate
If what Muhammad meant was that man can never predict the weather a 100% then he should have said no man will ever be able to tell if it is going to rain
FOR CERTAIN. Same thing with the womb.
In order for their apologia to work they have to admit that Muhammad should have been more clear than he was in this hadith.
He compares us knowing whether it will rain to if we know where we are going to die. And since it is almost impossible for any of us to know our location of death with any degree of certainty and we can know with a specific degree of certainty (e.x. 70%) when it will rain Muhammad is guilty of making a false comparison.
And third of all if this mistake was part of another holy book they would still think it's wrong. You can apply these apologetics to literally all religions even to the stories of Zeus and Poseidon.
This is what we should do. We should take this hadith and replace the characters and say that it is in the Book of Mormon. Once we get the muslim to admit how silly the story is, we tell them it is actually a sahih hadith.
I'd like the see an apologist wiggle himself out of that one.