and we've had plenty of rain. in the short spell between rain i watered a bit too. but our soil is just so much clay that it doesn't take much for the yard to start to get light and crispy.
last year i put down some of this -
https://www.amazon.com/Earth-Right-Soil-Conditioner-Gallon/dp/B0007LTTM2/ref=sr_1_2?
i don't think it did anything