IRON MOUNTAIN — Temperatures are expected to soar into the 90s at Iron Mountain-Kingsford on Friday, but below record levels as a dangerous heat wave covers much of the nation.

Today’s forecast calls for a high of 84 with a slight chance of showers and thunderstorms. Friday should be sunny, with a high near 91 and a chance of showers and thunderstorms in the evening, the National Weather Service said.

The highest July 19 temperature ever observed at Iron Mountain-Kingsford was 99 degrees in 1977. The highest for any date was 104 degrees on July 29, 1917, and the most recent official high of 100 degrees was July 16, 2006, according to NWS data.

In the Midwest, daily record high temperatures may be challenged through Saturday in Milwaukee, Chicago, Detroit and Cleveland, said AccuWeather meteorologist Alex Sosnowski. “Low temperatures in the heart of some of the major cities may not drop below 80,” he said.

While temperatures at Iron Mountain-Kingsford should drop into the 60s both tonight and Friday night, there is a chance for storms that could be severe with flooding, downpours and damaging wind gusts.

“For those spending time outdoors … be sure to keep an eye out for changing weather conditions,” Sosnowski said.

A high of 83 is predicted for Saturday and just 79 on Sunday, as cooler air begins to enter from Canada.

Nearly 100 local records may be broken today and Friday in Texas, Oklahoma, parts of the Midwest and a large swath of the East Coast.