The Celina Rotary lighthouse is barely visible in a dense fog that moved into the Grand Lake area early this morning. Celina and St. Marys city school districts closed due to the lack of visibility on the roadways, while other area schools remained on a 2-hour delay at press time. Sunshine is expected today with highs reaching near 70. Temperatures will stay in the 70s through Thursday, according to local weather forecaster Dennis Howick.