Same here.
When I was living in Portales NM we had an 8 month stretch of no rain. Place was turning into a nice dustbowl.
A few hours after I wash all the dirt of my car we finally get some rain with baseball sized hail
There was no mention of storms/moisture or anything int he forcast,been the same for months- sunny/dry/windy
So the car is clean but I had to get the roof replaced on the house and half the windows
Afterwards I threw the garden hose out....
At least the car was in the garage when it happened.
Another problem out there that the ground water had so much calcium in it it would etch the glass,damage the paint if your car got wet by someones lawn sprinkler and you didn't dry it off in time.