Climate change and a lack of rainfall, can increase the chances and the severity of a drought, and droughts some with their own problems as well, such as water restrictions, lack of water for agriculture uses, etc. Another example is that if the snow melts too fast and too early, then there will be a rush of water in the existing water mangenment systems, and that the ground will become more thristy faster and sooner.
Now knowing all the effects that climate change and lack of rainfall contributes to droughts, it's time to learn what sustainable choices an average person can make to decrease the impact of a drought. When a lot of people do something small, it grows quickly to have a larger effect to a cause, in this case a drought. There are many things you can do to decrease the effect of a drought such as implementing water restriction, lowering landscape watering times, saving water wherever possible, etc.
Take a look into the sim that shows interactivly what the patterns for the droughts in Texas county by county in a heat map.