Now that it's heading into fall and cooler days I will switch from my shorts to these: https://www.mec.ca/en/product/5033-250/Adanac-Tights
It says they're "tights" but they are just long cycling pants that are fairly water repellent, quite stretchy and just plain practical on cooler days. Now I will also wear an additional layer on top of my jerseys, a long sleeved water repellent and breathable high vis shell - I don't ride much in the rain but as soon as things dry out I'm out there.