one being in 1976. During especially cold winter and spring storms, intense showers do occasionally produce a significant amount of hail, which can create hazardous driving conditions. Snowfall in the city often melts upon ground contact, with traceable amounts occurring in some years. Significant annual snow accumulations occur in the foothills east of the city, which had brief and traceable amounts of snowfall in January 2002, December 2009, and February 2011. The greatest snowfall ever recorded in Sacramento was on January 5, 1888. On average, there are 76 days with a high of +, and 14 days with a high of +; On the other extreme, there are 8.5 days where the temperature remains below , and 15 freezing nights per year. Official temperature extremes range from on December 22, 1990, to on September 6, 2022; a station around east-southeast of the city dipped to on December 11, 1932. The average annual precipitation is . On average, precipitation falls on 58 days each year in Sacramento, and nearly all of this falls during the winter months. Average January rainfall is , and measurable precipitation is rare during the summer months. In February 1992, Sacramento had 16 consecutive days of rain, resulting in an accumulation of for the period. On rare occasions, monsoonal moisture surges from the Desert Southwest can bring upper-level moisture to the Sacramento region, leading to increased summer cloudiness, humidity, and even light showers and thunderstorms. Monsoon clouds do occur, usually during late July through early September. Sacramento is the second most flood-susceptible city in the United States after New Orleans. Sacramento has been noted as being the sunniest location on the planet for four months of the year, from May through August. It holds the distinction as the sunniest month, in terms of percent possible sunshine, of anywhere in the world; July in Sacramento averages 14 hours and 12 minutes of sunshine per day, amounting to approximately 100% of possible sunshine. Since 2010, statewide droughts in California have further strained Sacramento's water security. Demographics In 2002, the Civil Rights Project at Harvard University conducted for Time magazine named Sacramento "America's Most Diverse City." The U.S. Census Bureau also groups Sacramento with other U.S. cities having a "high diversity" rating of the diversity index. Moreover, Sacramento is one of the most well-integrated U.S. cities, having a relatively high level of ethnic and racial heterogeneity within its neighborhoods. The