Oh My, 69 days of over 100 degrees. Here in Ca, we are extremely lucky to have one of the mildest summer in recent times - maybe only 5 days of over 100 degrees. We never get any summer rain, so we do have to irrigate in the summers. Tomatoes are only starting to turn red. I have some early peonies that bloom before it turns hot, so I am able to grow a few here in zone 9. Tree peonies do well.
With 90 acres, the extended drought is a huge disaster. Hopefully you will get some relief soon.