![]() ![]() ![]() (Note: Clicking on the floating-bar charts a second time after they appear on the screen will enlarge them even further). In the entire 1921-present series, greatest positive departure for any given calendar day is +25 F for 14 June 2000, the most negative departure -22 F for 11 December 1932. In general, the most extreme departures for Downtown San Francisco are positive, reflecting to a large extent the occurrence of warming offshore flow episodes. ![]() Vertical lines extending upward from the zero line indicate above average means for the day (colored red), those extending downward indicate below average daily means (colored blue). The second chart down shows the day-to-day mean temperature anomalies (daily mean temperature less the corresponding long-term climatological mean). The same is repeated for the second and third charts below. The bars depict the varying diurnal, synoptic, long-wave, seasonal, and sea-surface temperature anomaly influences on San Francisco temperature over time, and for effect they are deliberately adjoined with no spaces in-between, lending an enhanced “signature” look, so to speak, to the time-series. Superimposed on the bars are two line traces, the upper one connecting 1921 to present mean daily maxima, the lower one mean daily minima. The uppermost chart for a given year’s page (accessed by the links below) are “floating-bars” of the year’s daily maxima and minima temperatures. K-Means Clustering Analysis of SF Int’l Airport Diurnal Resultant Wind Patterns. ![]() Boxplot of Downtown San Francisco Monthly Precipitation Distributions (1849-50 thru 2016-17 Seasons.Downtown San Francisco Jul-Jun Total Rainfall Histograms (New 6/19/20).Downtown San Francisco Seasonal Rainfall (1849-50 thru 2020-21 Seasons) New (7/24/21).Downtown San Francisco Mean Daily Max/Min and Extreme Daily Max/Min Temperatures at One-Third Month Intervals.SAN FRANCISCO MEAN AND RECORD DAILY MAX/MIN TEMPERATURES Current year’s data can be accessed from the NWS-Monterey website at Latest Update: e-mail contact: CLIMATE OVERVIEW GRAPHSĢ022 Daily Temperatures and Precipitation for Downtown San Francisco New (9/11/22)Ģ021-2022 Cumulative Daily Precipitation for Downtown San Francisco New (6/30/22)Ģ021 Daily Temperatures and Precipitation for Downtown San FranciscoĢ020 Daily Temperatures and Precipitation for Downtown San FranciscoĢ020-21 Cumulative Daily Precipitation for Downtown San FranciscoĢ019 Daily Temperatures and Precipitation for Downtown San FranciscoĢ018 Daily Temperatures and Precipitation for Downtown San FranciscoĢ017 Daily Temperatures and Precipitation for Downtown San Francisco The 1921 to 2022 period of record includes observations from four different Downtown locations. Included are summary overview charts followed by 102 year-to-year graphs depicting daily temperatures, temperature anomalies, and precipitation. The following is a graphical climatology of Downtown San Francisco, California temperatures and precipitation, from 1921 into the current year 2022. ![]()
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