Here’s a long term graph with a curve fit of the Catalina October through May precipitation beginning in 1977.
The Catalina record begins with an extraordinary wet spell in 1977-78 through the early 1980s, augmented by El Niñoes and possibly the Pinatubo eruption in the early 1990s. The initial wet spell was associated with a shift in the so-called “Pacific Decadal Oscillation.” The red line is a polynomial fit to the data. It seems to suggest a recovery is underway from the overall drier winters of the early 2000s despite the 2020-21 Oct-May drought. Will a recovery continue? Is it real?