1. It's freezing/chilly out there!
2. It's a bit nippy today, but I will still run my usual distance.
3. There is a real nip in the air today.
4. It's brass monkey weather today. You'd better wrap up warm!
5. Tomorrow is supposed to be mind-numbingly cold. I need to get out my heavy winter jacket.
6. The wind really chills me to the bone. / The wind is bone-chilling.
7. I'm frozen/stiff.
8. I am freezing my toes off.
9. The wind just cuts right through you.
10. I can't stop shivering from the cold.
11. This cold front is taking its toll!