The city has abundant sunshine year-round and averages about 300 sunny days per year, with an average of precipitation annually. The wettest "rain year" has been from July 2004 to June 2005 with at least (some days were missing) and the driest from July 1973 to June 1974 with . Record breaking wide spread flooding occurred during January 2005 when area creeks and rivers far exceeded their banks and washed out homes and some neighborhoods. The wettest month has been January 1993, when fell. Precipitation is fairly evenly distributed throughout the year, except for a markedly drier period from April through June, which occurs after the Pacific storm season ends, but before the southwest monsoon begins, usually in mid-July. Precipitation mostly comes from the Pacific Ocean from late fall through early spring. The storm track usually lifts north of the city by mid-April. The monsoon brings localized and often intense thunderstorms from early July through mid-September. The greatest rainfall in 24 hours was on August 31, 1909.