A record-challenging heat is stifling South Florida with temperatures not typically seen until deep summer as a loitering ...

USA TODAY analysis found that 90-plus heat index days are becoming more frequent, starting earlier, lasting longer and occurring in longer streaks ...

A map shows areas in California where temperatures are expected to surpass 100 this week. There has been an early-season heat wave in Southern and Central California. On Monday, people in four states ...

Forecasters expect multiple records to be broken over the next week as an early heat wave settles over the region.