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When Will West Michigan's Heat Wave Break?

How hot was it Wednesday and when will this heat wave break?
Credit: 13 On Your Side Weather
Hottest Heat Index - August 23, 2023

GRAND RAPIDS, Mich. —

How Hot Was It Wednesday?

The high temperature on Wednesday in Grand Rapids tied for the hottest so far in 2023, reaching 91°, matching the same highs on June 1, 2, and 21 and July 5.

Credit: 13 On Your Side Weather
Observed High Temperatures - August 23, 2023

Temperatures soared starting around noon, peaking around 6 p.m.

Dew points surged as well, climbing close to 80° in many locations. The 79° reading in Grand Rapids tied for the fourth highest on record.

Credit: 13 On Your Side Weather
Top 10 Highest Dew Points - Grand Rapids

The heat index skyrocketed above 100° as well, making it the hottest since June 14, 2022.

Credit: 13 On Your Side Weather
Highest Heat Index - 2023

When Will The Heat Break?

A cold front will slide across the Great Lakes region on Friday, gradually lowering temperatures and dew points, so by Saturday afternoon, the weather will feel much more comfortable. Next week, temperatures are expected to remain in the 70s while dew points will drop into the 40s and 50s.

Credit: 13 On Your Side Weather
Heat Index Forecast - ECMWF (Euro) Model

Watch the 13 On Your Side team of meteorologists for the most complete and accurate weather forecasts.

Credit: 13 On Your Side Weather
Social Media - George Lessens

Chief Meteorologist George Lessens

George is a graduate of Penn State University working for 13 On Your Side for over 42 years. He is a Certified Broadcast Meteorologist (CBM), a thirteen-time MAB® Weathercast Award Winner, two-time EMMY® Award Winner, NATAS® Silver Circle Award Winner, and Weather-Ready Nation® Ambassador. 

Contact me at: GeorgeLessens@13OnYourSide.com

Follow me on X/Twitter @glessens and Facebook GeorgeLessensWZZM

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