As temperatures rise, irrigation becomes more important. Container plants will begin to dry out and need to be checked every few days. Inspect irrigation systems for leaks, clogged drip emitters, misaligned sprinkler heads, and other problems which could waste water. Make sure the water is going to the root zones of the plants.
Things to consider:
Use a smart irrigation controller. These help adjust watering based on local conditions. Learn more about smart controllers.
Collect water from the shower as it heats up and use it to water any plants.
Use graywater from garage sinks and washing machines to water ornamentals and lawns. UC has a publication titled Use of Graywater in Urban Landscapes in California.