wklink, my kid is Northwest kid and he long-tossed year-round since age 11. In the cold, he'd throw up against a racquetball court wall.. but he ALWAYS threw. Born and raised in Seattle.. I know the typical winter day in Olympia is 40-50, so throwing can be done outside. I know it rains but it is not constant, pouring rain.. I don't see how light showers should stop you.