Most peer-reviewed climate experts begin their graphs around 1980. Who am I to disagree with them? Since 1981, US March 2 temperatures have plummeted about five degrees.
On this date in 1992, almost the entire US was over 60 degrees, and much of the country was over 80 degrees.
On this date in 1904, Kansas, Oklahoma, Texas, New Mexico and Arizona were all over 90 degrees. CO2 levels were 300 PPM.