How cold do you ride in shorts during spring?

[Crankin]

I need my knees covered below 65 F if it's dark or cloudy and below 60 if it's sunny. I can do knee warmers and shorts down to 50 or so, but sometimes my butt gets cold and I'll wear light tights. It was often 40-50 in the AM when I used to commute and 70-80 on the way home. I just stuffed my tights in my backpack.
Today was beautiful and 64 degrees and my legs were freezing for the first half of my ride. I was in shorts, because I knew I would feel a bit overheated eventually with knee warmers.

[shootingstar]

lph, I start with light, full fingered cycling gloves, then I change over to short-half fingered gloves when it gets warmer. My fingers unlike my knees/legs are extra sensitive to cold temp., because I have Reynauld's Syndrome.

No my knees don't feel it when it's cold/damp. But no, if it's below freezing as the norm, then of course I will wear long tights.

I know myself: I don't even wear sleeveless tops in hot weather when I cycle. Not for all the years I've been cycling. Not even when I was vacationing in Hawaii.

People /locals in our area consider 18 degrees C, hot. I think it's just perfect temp. I consider 25-35 degrees C hot, depending on the humidity.

[Blueberry]

18 degrees C = ~65 degrees F. That's HOT to people? Wow. They shouldn't move to the south of the US! In the summer, our low temperatures will be more than 25 degrees C and our highs will exceed 35 C.

I don't ride below 65 without something over my knees. I have enough cranky knee problems - I don't need to make them worse. But - if it works for you and you suffer no ill effects, great! I have ridden in knickers and a sleeveless jersey, so go figure.

[emily_in_nc]

18 degrees C = ~65 degrees F. That's HOT to people? Wow. They shouldn't move to the south of the US! In the summer, our low temperatures will be more than 25 degrees C and our highs will exceed 35 C.

Heheh, she's so right! I won't ride in shorts if the temp is below 65F (18C).

[Becky]

For me, it depends on the ride. On a road or easy-paced mountain ride, I'll cover my knees below 65 degrees. For more intense rides like this morning's mountain bike race, I'll wear shorts when it's 50 degrees +/-, especially if I know it's going to quickly warm up.

[goldfinch]

I'm about where ShootingStar is at. I can wear shorts in the low forties if it warms up within an hour to 50 plus. I do layer on the top layers and will wear a wool beanie under my helmet if it is in the 40s.

[malkin]

I can bundle all up until the temp is well into the 80s (F).