Patrice Carlo, a fourth-grade teacher at Moton Elementary School in Brooksville, is bundled up as she opens the door for kindergartener Jackson Hansard, 5, upon his return from winter break Tuesday. The National Weather Service recorded a low temperature of 30 degrees early Tuesday morning at Brooksville-Tampa Bay Regional Airport. Stacy Strickland, Hernando County Extension Service director, said the mercury didn't drop low enough for berry farmers in the county's coldest areas to turn on sprinklers to form a protective layer of ice on their crops. "It was one of those borderline situations," Strickland said. Forecasters predicted a low of 29 degrees in Brooksville for this morning, then a return to warmer weather for the rest of the week.