This Day in Southeast Michigan Weather History ...
On July 17, 2012, the afternoon high temperature soared to 102 degrees, reaching 100+ degrees in Detroit for the third time that month. Highs also reached 101 in Flint and 100 degrees in Saginaw. All either tied or broke the existing record for the date.
On July 17, 1931, the temperature reached a record high of 100 degrees in Saginaw. Saginaw also had record highs of 98 degrees on the 15th and 16th.
Also on July 17, 2006, a squall line moved across Southeast Michigan hitting the Tri Cities and Thumb regions the hardest. Severe weather was reported in all seventeen counties of Southeast Lower Michigan. Most of the damage was from severe winds, but there were a few reports of hail up to golf ball size in Saginaw. Winds were estimated up to 100 mph in eastern Huron County as hundreds of trees were snapped or uprooted. One person died, and one person was injuried from lightning in Detroit.