Ct8 what kschachn is saying cold is relative to one's location.
In your area temps in the single digits is quite common. Conversely in Austin Texas temps in the single digits is exceptionally cold.
For the same effect to be felt in your area it would have to be -30°F and even a bit colder than that.
My area if low temps if it's 0°F or a bit below that.... It's extremely cold.
Now low temps in the mid 20s or low 30s... Routine typical seen temps.
Cold for me... Is temps in the 10s or colder. I can wear shorts in temps in the 20s or 30s. IF I am only going from my car into a grocery store etc etc. Now if I am outside for a longer period of time then I do dress warm enough to do that. No shorts obviously.
If it's in the 10s or colder... Then I wear long pants even know I am walking from my car into a store.