I guess you have nice temperatures. It was actually like that in the Sierras, we could have snow on the ground, be wearing snow boots to get around, but also just wearing a t-shirt or thin long sleeve shirt in the afternoon when the sun was out. It never really got much below freezing either. My husband told me it was not normal winter or Mountain weather! He is from New York.
I wouldn’t exactly say NICE temps but when you are just going from house to car then into where ever you are going, don’t want to be bothered with a heavy coat.
I’d wear one to work then forget to get it out of closet when I left and not have it for the next day anyway.
With a jacket, I’d just put it on the back of my chair and would remember it.
We do have temps that fluctuate from the teens to high 30s or 30s to high 50s in the winter.
Do not have severe winters like we used to.