Going back 3 years, you can see the issues really started after our cold/rainy spring in 2022. Since then the faucet has been a drip for the northern peninsula. Seems like the shadow has shifted West compared to the last 30 year averages, which is an interesting phenomenon.
Those WRCC maps blend all stations together without regard to completeness of data. Or data issues like Boeing Field which has major issues currently and is massively under-reporting rainfall amounts. Lots of the smaller stations frequently have missing days. With temp maps... missing data could go either way (warm or cold) but when precip data is missing its always in one direction and that is drier than reality.