Just over 4½ inches of rain fell over the weekend in Grass Valley. That’s about three times the normal amount of rain for the entire month of April, the National Weather Service said. The weekend rains are the latest example of precipitation that’s pushed through Nevada County this year, helping fill reservoirs and eliminating a drought that’s loomed over Northern California. Meteorologists said Grass Valley has received 90.64 inches of rain since Oct. 1. That’s compared to an average of 50.74 inches for the same time.