Utilities say crews worked through the night to restore electricity to thousands of Michigan homes and businesses without power following this week's severe thunderstorms.
DTE Energy says Friday morning that about 105,000 of its customers were without power. Early Friday, Consumers Energy reported about 52,100 without power.
More than 22,000 of those remain in Genesee County alone. Some customers may not have power restored until Sunday.
Most of those without electricity lost service after storms late Wednesday and Thursday.
Friday's forecast calls for temperatures to hit or surpass 100 degrees in several cities across the state. That also happened Thursday.
"The hot and humid conditions will continue as a ridge of high pressure remains in control over the state," TV5 meteorologist Catherine Bodak said. "Temperatures will flirt with record highs as they soar into the upper 90s with heat indices well over 100 degrees."
Consumers Energy had 160 crews on the job Thursday and more are being called in from Indiana.
DTE Energy says its crews are working 16-hour shifts.
At its peak, the outages affected about 325,000 DTE Energy customers and 104,000 Consumers Energy customers.
Copyright 2012 WNEM (Meredith Corporation.) All rights reserved. The Associated Press contributed to this report.