If you start doing longer rides you learn there are general temperature ranges and kit that's fine to commute in or ride an hour in traffic with a rucksack is very different from the kit you want on a 6 hour ride in the countryside. I generally have kit for 0-10, 10-15, 15-22, 22+°C. My 0-10 jersey will boil me alive after an hour cycling in 13°C but likewise my 10-15°C will risk hypothermia in 8°C. There's only so much layering you can do with cycling kit before it starts becoming restrictive.