@petergleick Are you sure the average has not changed over that period? Your graph shows the average over the whole period (a single number), not a moving average over time. I believe the moving average is trending lower, especially in the last decade.Here is the LOESS average per decade, through 2022, from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/4/pcp/12/1/1895-2022?base_prd=true&begbaseyear=1901&endbaseyear=2000&trend=true&trend_base=10&begtrendyear=1895&endtrendyear=2022&filter=true&filterType=loess .