What temprature would make you weak more than a T?

[Frozen]

For me, if it's rainy and windy, +6c, if it's sunny, up to freezing.

[Atlas]

It's currently 5°C here. I don't wear a shirt. I wear a shirt when it's above 20°C.

[Frozen]

+6c Here, but with rain and wind...my kind of weather :> ...