By Saturday, the area of low pressure is going to be moving over the region and allowing for much cooler air to move in with highs 5 to 10 degrees below the seasonal average for this time of year. Further cooling will follow into Sunday. After a break in the showers Saturday afternoon, a second round of scattered showers are expected to begin Saturday night. More moderate steady rainfall is expected to sweep through the region Sunday morning associated with the main cold front - from northwest to southeast - reaching San Diego around noon Sunday (timing is subject to change). A slight (15-20%) chance for thunderstorms expected Sunday with the front.
There is potential for light mountain snow this weekend. Snow levels will start near 8,000 feet today, hovering around 6,500-7,000 ft most of Saturday before falling to 6,000 ft during the day Sunday - when there is the best chance of accumulating snow for mountain communities. There is ~ 60% chance of snowfall greater than one inch in total Sunday at Big Bear Lake: ~ 40% chance for Wrightwood.
Map of forecast high temperatures for Southern California for Saturday Apr 11, 2026. For the coastal areas: 65 to 69, western valleys and inland Orange County: 67 to 70, inland valleys: 62 to 70, mountains between 4000 ft and 7000 ft: 50 to 61, high desert: 64 to 74, low desert: 78 to 84.
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