I hope it dries up. Only dealt with Powdery Mildew once and it was last year due to the never ending rainy season.
The only thing that LOVED all the rain was my Cucumbers. I had a GAZILLION of them! I put up two kinds of pickles and made enough Pickle Relish to last me until I die.
I’m not growing Cucumbers this year. Or probably ever again, LOL!