Some weeks I died 10 times, once in the morning and again at night, back when I commuted daily. Crazy stuff. Be warned

But seriously, it's all about the temperature. I found the 50-60°F range the toughest because it wasn't cold enough to go full-on waterproof but it was cold enough that I didn't want to get too wet. Always a tough balance. 32-45°F rain is easy in comparison, so long as you actually stay dry.