All-Time Highest Temperature Ever Tied in Salt Lake City, UT Yesterday 107°F. That was the temperature recorded at the Salt Lake City International Airport yesterday, June 15, 2021. Only twice in the past 147 years of record-keeping in Salt Lake City has the Utah capital witnessed a temperature so high. Once in July of 1960 and again in July of 2002. For now, the record remains tied at 107ºF. But will […] SnowBrains | June 16, 2021 6 Comments