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 2:17 Cinthia's forecast: Dry second day of the year, rain on the way 2:51 Jeff's Forecast: Friday system brings return of Bay Area rain 3:36 Jeff's forecast: Rain on the way 1:54 Vianey's forecast: Upper 50s, low 60s 2:38 Jeff's Forecast: New Year's Day weather and how much rain Friday