Raw data shows that 1934 was the hottest summer in Oklahoma
Hottest 3 month periods Rank Month Year Temperature 1 8 1934 86.265 2 8 2011 85.5885 3 8 1936 85.1849 4 8 1980 84.7552 5 8 1954 84.7096 6 9 1954 84.6536 7 8 1952 83.6706 8 9 1936 83.612 9 8 1943 83.4336 10 9 1980 83.3971
1936 maximum temperatures were the hottest. NOAA claims that last summer was the hottest on record in Oklahoma, but without their data tampering – 2011 was #2 or #3
Hottest 3 month periods Rank Month Year Temperature 1 8 1936 99.9766 2 8 1934 99.8984 3 8 2011 99.5156 4 9 1954 99.5 5 8 1954 98.7396 6 8 1980 98.5521 7 9 1956 97.8594 8 8 1956 97.5208 9 9 1980 97.3125 10 9 1936 97.1875