Summer Is Hotter And Longer In Michigan, Analysis Shows

MICHIGAN — If you think Michigan's summers are hotter and longer than before, then you're not alone, according to the nonprofit research group Climate Central.

Although we’re just about two weeks into summer 2022, we’ve already experienced hotter-than-normal temperatures in many parts of the country, including the Midwest, according to the private weather company AccuWeather.

With AccuWeather meteorologists expecting temperatures to soar across the west and much of the high plains this week, Michigan will catch a break as a northern jet stream will curve.

While temperates in the West and Great Plains are expected to easily eclipse 100 degrees, especially in the Southwest, the shift in the jet stream will keep temperatures comfortable in Michigan with highs hovering around 80 degrees.

However, on average, temperatures in the Midwest, which includes Michigan, increased 1.3 degrees Fahrenheit from 2017-2021 from 1971-2000, according to a study by the nonprofit group Climate Central, The Washington Post reported.

The outlook going forward isn’t good. Overall, federal agencies project more dangerously hot days, a worsening of drought conditions, more wildfires and more hurricanes.

The effects of climate change are most sharply felt in the West.

Reno, Nevada, where summer temperatures have increased 10.9 degrees F., on average, since 1970, is the fastest-warming city in the country during the hottest months, according to the Climate Central study.

The increasing temperatures can cause heat emergencies that increase hospitalizations. Heat-related illnesses are among the deadliest weather-related illnesses in the United States.

Geographic tolerance for heat is among the factors considered by researchers studying heat-related hospitalizations for a 2019 study. They found heat-related hospitalizations begin at lower heat indices in cooler regions than in the South and Southeast.

For example, heat-related hospitalizations begin with heat indices around 105 degrees F. in Texas, but 81 degrees F. in the Pacific Northwest.

The Metro Detroit area can expect seven additional days of extreme heat — that is, days with a heat index of 90 degrees F. or hotter.

When it’s that hot, the risk of heat-related illnesses such as heat stroke, muscle cramps or heat exhaustion increases, according to the National Oceanic and Atmospheric Administration. The Climate Central analysis found the 25 cities with the biggest increase in dangerously hot days are found in Texas and the Southeast. All of those cities are seeing two additional weeks of extremely hot days, compared to 1970.

Climate Central looked at historic data from 246 U.S. locations to calculate the increase in extremely hot days from 1970-2021. The analysis found:

• Since 1970, 74 percent (184) reported more extremely hot days annually.
• About 51 percent (126) had at least seven additional extremely hot days annually.
• The largest change was in Austin, Texas, with 43 additional days above 100 degrees F.