September 28, 2015 5:45 pm Jeff's Forecast: Cooler Tuesday A large trough of low pressure will stream in high clouds Tuesday. As Chief Meteorologist Jeff Ranieri explains, this will keep temperatures down with an isolated chance of California rain this week. US & World Videos 2:48 Forecast: Gradual warming trend 1:35 Kari's forecast: Gradual warming trend 2:59 Rob's forecast: Warmer days ahead 3:34 Bay Area Forecast: Warmer days ahead 2:42 Cinthia's forecast: Sunny and breezy