Questions like, “When will it clear up enough for us to take off?” are best left to fortune tellers and TV weather people, neither of which have a clue. Asking (and re-asking) airline employees will not get you the answer you need, and in super-bad conditions, will get you dirty looks. Weather changes rapidly, and the fate of a particular flight is not up to the airlines — the FAA controls a lot, as does ATC. Storms and flight volume in one region often affect flights in other regions, so your delays may be due to something very far away.