LANSING, Mich (WLMI) Another scorcher today throughout Michigan with high temperatures expected to be into the mid-90s—the heat index could top 100. As a result of the heat wave, the health officials say people need to take a few precautions, like drinking plenty of water, staying in air conditioning when possible and taking frequent breaks while working outside. Another scorcher today throughout Michigan with high temperatures expected to be into the mid-90s—the heat index could top 100. As a result of the heat wave, the health officials say people need to take a few precautions, like drinking plenty of water, staying in air conditioning when possible and taking frequent breaks while working outside.