What is the coldest month in Oklahoma City?

I'm curious to know, what is the coldest month in Oklahoma City? I've heard that the weather can be quite unpredictable there, so I'm eager to learn more about the temperature trends throughout the year. Specifically, I'm interested in finding out which month experiences the lowest average temperatures, and if there are any notable differences in temperature between the day and night during this time. Additionally, I'd like to know if there are any particular weather patterns or phenomena that contribute to the colder temperatures in Oklahoma City during this month.