Why would you wait another month to go when you could go now. That's like starving to death and not eating a loaf of bread for another month. Unless you don't have the opportunity, there is no reason to not go snowboarding.
I think he is asking if it is possible they will open on the 19th with no snow.
Anything is possible, check the weather forecast.... is it a natural hill or do they use snowmakers? That's plenty of time to make a snow run if they have those running.