![]() Please review our full terms contained on our Terms of Service page. The weather service posted eye-popping 48-hour rainfall totals Monday morning, highlighted by 16.55 inches recorded on Mount Tamalpais in Marin County. 15-day stretch in over 156 years, according to Bay Area meteorologist Jan Null. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. The resulting rainfall totals from these storms have been staggering and. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. According to data from the state's Department of Water Resources, the Bay Area received roughly 82 of its annual average rainfall during the 2021-2022 water year, measured from Oct. The water year starts on October 1 of the previous reference year and ends on September 30 of the reference year. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. (to Sep 30, 2023) Updated: Fri at 03:00:01 AM The following is data from National Weather Service cooperative observers as of the end of last month. We assume no responsibility for any decisions made on the basis of the content presented on this site. ![]() Weather data is prone to errors, outages, and other defects. Wednesday, 24-hour precipitation totals included: 0.86 inches at Ben Lomond, 0.78 inches at Middle Peak at Mount Tamalpais, 0.78 inches at Kentfield, 0.60 inches in Redwood City. ![]() The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. See all nearby weather stations Disclaimer Today Hourly 10 Day Climate and Weather California Just Had Its Driest Rain Year Since 1895 By Jonathan Erdman JAt a Glance July 2020-June 2021 was the driest July-June period. The details of the data sources used for this report can be found on the San Francisco International Airport page. After two moisture-rich storms known as atmospheric rivers swept Northern California, downtown San Francisco is 543 of normal rainfall for Oct.
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