The temperature at Gallipolis, Ohio on July 21, 1934 was 113 degrees. Weather Underground is forecasting that it will be 25 degrees cooler today than it was in 1934.
Here are some other USHCN Ohio temperatures for July 21, 1934.
DELAWARE 110 CIRCLEVILLE 108 DEFIANCE 107 URBANA WWTP 107 GREENVILLE WTP 105 MC CONNELLSVILL 105 PHILO 3 SW 105 BUCYRUS 104 PORTSMOUTH-SCIO 104 MILLERSBURG 103 WAUSEON WTP 103 KENTON 102 UPPER SANDUSKY 102 WAVERLY 102 HILLSBORO 101 CADIZ 100 TIFFIN 100
Andrew Freedman at the Washington Post says that this is the hottest summer in history.