Um...Winter?

Fly anyway! You will likely have the field to yourself and be able to practice new maneuvers as much as you want. Perfect time to work on the low KE pass or the DOD torque roll. I think snow is softer than asphalt. It looks soft in pictures...how do planes do if you drop em in the snow? It seems like a good time to practice low and slow, high alpha maneuvers to me.

We fly all year here, but it does rain sometimes, makes the roads muddy. Paved runways make life a bit easier too.