Winter in Paris

I got up at 06:30 and walked outside; jeez, I could see my breath. I then wondered if there was frost last night. I checked my phone and it was 45 degrees. Since we were in Nice, I didn't bring any winter clothing. I have a light sweatshirt, but that's it. I hope that's enough for Paris today. It's suppose to be 66 degrees today and I can't wait until it warms up.