Since 1873, the high temperature at the official Twin Cities measuring site has reached 100 or above on 64 occasions. The most was in 1936, with nine days. The last year with more than one 100-degree temperature was 1988, with four.
Triple digits since 1980:
July 11, 1980 100
July 5, 1982 100
June 8, 1985 102
June 24, 1988 101
July 15, 1988 102
July 31, 1988 105
Aug. 1, 1988 101
July 3, 1990 100
July 13, 1995 101
July 31, 2006 101
June 7, 2011 103
July 4, 2012 101
For all dates since 1883, go to climate.umn.edu/doc/journal/100degreesmsp.htm
Source: Minnesota Climatology Working Group