Published on May 13, 2026
Temperatures are expected to climb into the 90s in the coming days – and with humidity, it may feel closer to 95-100°F in parts of the Carolinas. For many customers, this may be the first time cooling systems are put to the test this season, causing them to run longer to maintain indoor comfort. Warm overnight temperatures can add to the strain, keeping systems running for extended periods. Duke Energy is encouraging customers to act now with simple steps and tools that can make a difference before the hottest days arrive – especially as spring’s dry conditions and high pollen levels may already be restricting airflow for some outdoor units.