What waterproof pants out there provide the best airflow? I get hot very easily so I've always just hiked in lightweight shorts/a bathing suit but I'm rescheduling my upcoming thru to be during the winter months so I feel like I should be on the safe side and have some waterproof pants in my pack just in case. Help! Having waterproof gear is pointless if you're just going to sweat all over the inside of it anyway.

While we're on the subject: what's a great pair of extremely lightweight shorts, preferably waterproof? Mine are close to extinction, especially since it has starting raining in Charlottesville again (meaning I've been out on the trail 50x as much).