I live near Calera on I65. Are you south (LA)? Different heat zone down there. We do not really water outdoors this time of year. Here is a weather link to the nearby airport. You have something similar near you I bet.
At Shelby County Airport, the summers are long, hot, and muggy; the winters are short, cold, and wet; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 36°F to 90°F and is rarely below 22°F or above 96°F.
weatherspark.com
It basically shows a little more than an inch of rain per week this time of year. Also the heat buildup at the end of May and the drier times when we will water. Throw a tuna can or catfood can out there or get a nice rain gauge. It saves work and money by keeping some kind of gauge.
Anyway stop worrying about watering x amount. The soil types are a player in that, like potting soil will drain faster than clay in the ground. Focus more on maintaining moisture. Use your finger. Wet is bad, Dry is bad, damp is good. You could get a gauge, and even learn how to use it. But you know all about your finger. Damp means oxygen is available which for roots is a bigger deal.