In the event of a snowstorm, will the event be cancelled or rescheduled? Money refunded?

They usually post on social media. I have been refunded by Live Nation as well.

Usually they will announce on social media (Facebook, Twitter, Instagram, etc.) that you can refund tickets via the provider you bought them through in the event of a cancellation.

You would have to call and find out but I doubt they would cancel it unless the weather was really bad