Originally Posted by
highrpm
I can still ride comfortably in shorts in the 40s. Once the temps hit 40 or below, my knees start to feel it.
For me, the legs are fine in the 40s, the issue I run into is that they radiate out too much core heat and I have to compensate by wearing more up top. So, like many others here I have settled on a 50 degree cut off.