Washington D.C. and Baltimore both reached 100 degrees Monday, which tied record highs in both cities. Philadelphia got to 97 degrees, breaking the old record high of 96 degrees. Newark, New Jersey, came up just shy of the century mark, topping out at a record-breaking 99 degrees (old record 98 degrees).
Midland, Texas, set a July record for 100-degree-plus days Monday, and had long eclipsed the previous July record of six days with highs of 105 degrees set in 1995.
Sunday's daily record highs included El Paso, Texas (106 degrees; tied), Zanesville, Ohio (97 degrees), Scranton/Wilkes-Barre, Pennsylvania (95 degrees, tied), and Binghamton, New York (90 degrees).
Except for the Pacific Northwest, all other states in the Lower 48 had at least one location reporting a temperature of 90 degrees or above on Friday afternoon.
The heat index at Memphis, Tennessee, reached 114 degrees on Friday afternoon while up in Sioux Falls, South Dakota it felt like 110 degrees.
Dallas reached 100 degrees on Friday for the first time this year, and then reached 100 degrees again on Saturday.
On Thursday, the heat index at Cedar Rapids, Iowa, topped out at an extremely dangerous 116 degrees.
Waco, Texas, recorded its first 100-degree day of the year on Wednesday. The average date for Waco's first 100-degree day is July 4, so this came over two weeks later than average. Dallas reached 100 degrees on Friday for the first time this year.
Incidentally, Salt Lake City's daily low temperature of 81 degrees on July 18 was the city's all-time hottest record low in records dating to 1874. It was also the hottest string of nights on record in the Utah capital city