Since you're on Reddit I'm gonna assume you have a way to connect to the internet. Just hop on google and search for homeless resources. I found this directory of homeless shelters near you by searching for 'buckeye AZ homeless help'.
You can also see if you're eligible for food stamps here they changed the name I think.
If you have a job you can look on Craigslist for a cheap shared place to stay. If you don't have a job but do have an ID and Social Security Card you can go donate plasma to get some quick cash in your pocket.
Also try to get a gym membership if you don't all ready have one. I think planet fitness have them as low as $10 a month. It's a place to shower and relieve some stress by working out, as well as a place to get inside to cool off or warm up.
Hope some of this helps.
Cheers!!