Webthe website provides data downloads from weather and climate stations in california as well as tools for analyzing weather and climate data in california, including tools for. Web149 rows · may 4, 2021 · of the ten driest seasons for downtown l. a. Since 1877, six occurred within the last 20 years and four just within the last decade. Precipitation % of average for full water year through september 30th: Webprecipitation as of 10/05/2024. California’s annual precipitation can vary greatly from year to year and region to region. The map of california shows how this water year’s. Webaug 25, 2024 · seasonal rainfall charts for the main site. Historical cumulative and daily rainfall totals back to the 1997/1998 season when the automated rain gauge was.