Classical “cherry picked” data. Weather has cycles including in the decade timeframe. The 1930s was a very warm decade still holding many high temperature records. The 1940s was cold, 1950s warmer, 1960s stable to cool, 1970s cold. Why didn’t they compare using the 1950s as the baseline, or the 1930s or the 1980s?
LOL because it would not show the fake story they are claiming is true. And it is not.
The 1930s were really hot. That’s Dust Bowl weather.
My aunt was a baby then and my grandparents would drive her around in the car with the top down (cars and houses didn’t have air conditioning) in the evening to cool her off. Otherwise she wouldn’t sleep.