Back in the days when I coached cross country one of the first things I addressed, at the start of the first practice, was weather and the cancellation policy. Basically the policy went like this: If the weather is bad enough to cancel a meet, then practice is cancelled. I left the parents an out (we're talking about fourth through eighth graders), but in five years of coaching I never cancelled a practice, and I only remember ending one early once.
The point: I was going to be there for whoever wanted to practice. In secret I always hoped for one bad weather day early in the season,