Dh wants to take our 4, almost 5 year old hiking this weekend. The weather has been great, but now the high is supposed to be 38 with a chance of snow, they're going in the morning so it will probably be a little colder than that. Is my southern kid going to freeze to death if he goes? lol It's not the temp I'm so much worried about as the dampness and rain/snow. Opinions?