Do you have specific jackets in your collection you go o for rain or snow days. I would think leather is fine in the rain if the jacket is dried properly. I did wear a 50s long leather jacket on an hour and a half walk during heavy rain and later that day was at an outdoor wake all afternoon in constant light rain. The die bleed through to the lining and it took a couple of weeks to dry the jacket. If I know I will be in rain for an extended time I grab my Haelson made of quality steer hide. Never any issue bleed through nor do I get wet through the jacket. Must be something in the way the leather was tanned. Also, the leather is in excellent condition never needs conditioning.