SAN DIEGO (FOX 5/KUSI) -- Hold off on the car wash for now because there will be another round of light rain chances Thursday and possibly into Friday. A low pressure system will slide down California and bring with it cooler, cloudier conditions as well as spotty light rain showers from time to time starting Thursday morning. Grab your lederhosen! Oktoberfest returns to San Diego County Rain is likely to start between 11 p.m. Wednesday and before 11 a.m. Thursday. A second wave of rain is expected for Thursday evening into Friday. Rain accumulations will be light, generally less than a tenth of an inch. More clouds are expected from coastal waters to the mountains.  The center of the storm system will be over Southern California on Friday before it moves northeast over the weekend.  Dryer and warmer weather is expected early next week.