Weekend rain left San Diego soggy on Sunday, with slick roads and snarled traffic in some places but no reports of serious flooding. There were, however, lots of rainbows. The possibility of a few more scattered showers remains on tap for the region through Monday, meteorologist Stephen Harrison of the National Weather Service said. Back-to-back storms over the weekend brought 0.28 of an inch of rain to Lindbergh Field as of 4 p.m. Sunday. Mount Laguna and Palomar Mountain also got a light dusting of snow, according to the weather service.