I don't know about that. The "dust bowl" happened in the 1920s
Nope. Dust Bowl was in the 1930s. Midwest and Plains farms actually got a lot of rain in the 1920s, thus promoting a lot of plowing, planting, and subsequent blow off in the very hot and dry 1930s that followed.
The 30s actually but I'll assume that was a typo. I carefully chose the words "recorded thermometer data". The actual raw data is not easily found. NOAA and NASA GISS are very stingy with raw data, probably because it can be used to prove their charts present an altered reality. The dust bowl data had very high peaks, and were certainly higher than the highest recorded temperatures up through the early part of this century. The only data I have seen of recent temperatures compared with dust bowl temperatures shows a few current temperatures that are higher. However, this data has come from NOAA and GISS, so it may have been altered.
All that said, if you look at charts of mean US temperatures over the last century and a half, there has been a gradual increase, of about a degree C, over that time. This would mean that even though there were some very hot days during the dust bowl, there has been a bit of gradual warming since then. I don't take issue with your points since I cannot cite any data that disagrees.