Prepare for unexpected vet bills
While most people reserve patio-sitting for nice days as opposed to hot days, those with covered patios can provide great refuge from the summer sun and give you a place and a reason to eat good food, get cold drinks, and socialize in the process. Many restaurants have dog-friendly patios, so don't be afraid to dig around and find a few.
While dogs aren't supposed to have much more than a few licks of traditional ice cream (if that), there are plenty of stores that stock dog-friendly ice cream-like snacks for them. There are even places like Fassler Hall in OKC that host ice cream socials for purposeful human and canine intermingling!