On this date in 1910, half of the US was over 70 degrees, and more than a third was over 80 degrees. Alabama was 85F, Arkansas 87, AZ 98, CA 82, CO 86, IA 78, IL 83, KS 91, KY 83, LA 93, MO 87, MS 87, NE 82, NM 87, OK 93, TN 82, TX 90, UT 87, VT 68
For the entire month of March, two-thirds of days were above 60F in 1910 – which was the warmest March on record in the US. CO2 levels were around 300 PPM.
There is zero evidence supporting the superstition that CO2 causes warm days.
