Here is a comparison of weather.
Amritsar, India Weather Averages | Average High and Low Temperature | Average Precipitation and Rainfall days | World Weather Online
94531, Antioch, California Weather Averages | Average High and Low Temperature | Average Precipitation and Rainfall days | World Weather Online
The lows in December, January, and February are very close to my location. I am guessing those are the nights. They do seem to have warmer days though in winter. Still I am sure they have about the same amount of frost as we do. Interesting.