It's Getting Colder

You know it is getting closer to Winter when you put your feet out of the bed and they hit the floor, only to spring back up and under the covers.

But if that didn't happen, check the Captain Kirk thermostat:

If you are still uncertain if it actually is cold then use the Spock-o-meter:

Or perhaps family pets have body parts stuck to things:

Or when looking out of the window, creatures who should not feel the cold, are doing this:

So we have now established that it IS cold, BUT WHY???