Welcome to the Northwest -- check your rain at the border
Contrast that with our neighbors to the south, where California nearly had its wettest July in record. That was likely due to an active monsoon season -- Death Valley actually set their wettest July on record -- and the fact that many towns average near zero in the summer anyway that even a little is statistically significant.
In actual accumulation, Florida setting their record amid a very wet summer in the southeast got several inches more rain than California and Arizona.
But still, it looks pretty strange to see such a stark contrast over such a short distance!