June 1933 was the hottest on record in the U.S. Of the top 10 records, eight occurred before 1955, and only two have been in the last 70-years.
Top 10 hottest Junes on record in the U.S. by measured Global Historical Climatology Network daily (GHCNd, an integrated database of daily climate summaries from land stations across the globe).
- 1933
- 1934
- 1911
- 2021
- 1951
- 1921
- 1931
- 2016
- 1918
- 1936
