MYRTLE BEACH, S.C. (WBTW) – Good Sunday morning everyone. As you head out, it is hot and humid across the area. Today will be another warm day, with high humidity. Temperatures will top out in the upper 80s to low 90s along the Grand Strand. Temperatures in the Pee Dee and border belt will reach the low 90s. Heat index values again will be in the 100s.