20 degrees is warm enough for t-shirt and shorts. xD
Once it's down to about 10-15 degrees, then I start wearing sweatshirts, cardigans or jerseys.
Below 10 degrees I may wear a jacket.
Below 3 degrees there damn well better be snow! >8I

I usually feel cold, which is why I usually wear jackets.

In fact, in third grade, I went nearly the whole school year wearing a winter pluffy coat. XD

It actually wasn't Bake-your-skin hot today in Chicago, but rather cold and windy, I wore a sweater

i have a rare blood state where i cant fill cold to well but heat is twice as strong and i live in texas where it was 103F today and it fills like 184 to me

Lol where I live, anything above 19c is classed as a heatwave, but the minimum amount of clothing I wear contains an average outfit (t-shirt, plain pants) with a fluffy hoody. However, I wouldn't go around with something big and fluffy, since my average body temp is about 2c higher than average.

Hot!!? Hot is 45°C 110°F rares time burn fire at 50°C 120°F.
I fronze at 20°C 70°F... brrrr No matter sunny, only if you be the day outside under it.

Well, I lived in Calgary so I don't wear jackets until it gets to 35-40F depending on windchill.

I think I would actually die with a jacket at 70 degrees. SOOOOO hot-natured. But I sure would appreciate 70 degrees right now, it's at least 104 EVERY DAY right now.

20 degrees C is heavenly warm in Britain ;A;