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Average annual precipitation Percent Area in U.S. Drought Monitor Categories. The prevailing westerly winds from the oceans also bring moisture, and the northern parts of the state generally receive higher annual rainfall amounts than the south. California's mountain ranges influence the climate as well: moisture-laden air from the west cools ...
For reference, Downtown Los Angeles only averages 14.25 inches (362 mm) of rain in a normal rain year. [20] Heavy rainfall caused more than 300 landslides and severe flash flooding throughout the state. [21] San Diego received record rainfall for California at higher elevations causing floods and prompting road closures.
Average high temperatures are in the lower 80's F (26-28 C) with overnight lows in the lower 60's F (15-17 C). During this season, there is essentially no rainfall, and both July and August average less than 0.05 of an inch (1.27 mm) of monthly precipitation. The winter wet season normally runs from November through April.
That’s more than double the 30-year normal rainfall of 3.88 inches for the season to date, and well on the way to approaching the 30-year normal of 10.99 inches for the entire water season that ...
The region was battered with rain and high winds starting Wednesday afternoon. What’s next for Northern California weather? Here’s how long the rain will last
Tropical Storm Hilary blew past daily rainfall records across Southern California, ... L.A. County coast and metro area. Hollywood Reservoir: 4.92 inches. Beverly Hills: 4.8 inches.
Oakland set a record for 24 hour rainfall at 4.75 in (121 mm) of rain on December 31, while San Francisco recorded its second wettest day with 5.46 in (139 mm) of rain. [ 29 ] [ 30 ] The Santa Cruz Branch Rail Line sustained major damage. [ 31 ]
The time of maximum precipitation during the day gradually varies from late afternoon near the slopes of the Rockies to early morning near the Ohio River valley, [37] in part reflecting the west-to-east propagation of mesoscale convective systems. Mesoscale convective systems bring 30 to 70 percent of the annual warm season rainfall to the ...