I’f this is implemented flights may be cancelled due to bad weather at your airport. Flights may also be diverted to your airport if there is bad weather at a nearby airport. Your airport could also be damaged by bad weather.
According to the current devblog they are working on the weather system right now, though it has to do with the de-icing, not the things mentioned by Professoralex13.
I am pretty sure delayed, cancelled and re-routed flights will be part of the finished game, because it’s easy to implement such things into it, and they add to the realism and give players something to manage.
There are no news about Alpha 36. There are no news about any weather system development in future.
Unless you have a resource please don’t bump up a 1 year old topic with no-sense messages @Blackout