Hottest Iowa Temperature

Hottest temperature ever recorded was 117 on July 25, 1936 (Atlantic & Logan). Currently, the official record as reported by National Climatic Data Center (NCDC) is the 118 in Keokuk.  However, State Climatologist Harry Hillaker has done some extensive research into the records and doesn’t believe the validity of the report from Keokuk.  Most other nearby sites were 110 degrees that day (including a weather bureau site about 1 mile away from the observers home).   There are exposure issues near the thermometers as well.

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Posted under Records

This post was written by Schnack on July 25, 2008

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