Casey Moore's is one of the coolest places to grab a drink in Tempe. The bar and restaurant is in an old house situated in the Maple-Ash-Farmer-Wilson neighborhood. It's said to be haunted, but I've yet to see a ghost. I'll keep you posted.
The outdoor patio is huge and features misters and fans to keep it cool during the summer. Basically, the atmosphere at Casey's is fantastic.
The food is also great. They have regular bar food alongside seafood and traditional Irish options. Anyone can find something to eat.
The beer list is fairly short, but they make up for this with perfectly poured Guinness and boozy whiskey sours.