We are having a blizzard on the East Coast and same in the California mountains, but March 21 wasn’t always cold like this. March 21 temperatures were generally much warmer prior to the 1950s.
One hundred years ago today, almost three-fourths of the US was above 60F.
On this date 80 years ago, more than half of the US was over 70F.
On this date in 1921, it was hot in Boston and one person died from the heat.
21 Mar 1921, 2 – The Courier at Newspapers.com
It is freezing cold here in Philadelphia and snowing, and has been all month. But it wasn’t always cold like this. There were many years (when atmospheric CO2 was lower) during which March 21 was a very warm day.
Climate experts claim that spring is arriving earlier due to global warming, but like with everything else they say – they have no idea what they are talking about.
Washington DC cherry trees are blooming about two days later than they did 30 years ago when CO2 was below 350 PPM.
https://www.epa.gov/sites/production/files/2016-08/cherry-blossoms_fig-1.csv
Read more at Real Climate Science
As long at its Blizzarding on the Est Coast lets see it effect a certain estate in Tennesee