The average high temperature for July in New Orleans is 91 degrees, but the humidity can make it feel more like it is above 100 degrees. These conditions can affect running performance and can even be dangerous for runners who do not take precautions while training during the summer.
Stay hydrated. It is the first piece of advice on most athletic training guides for a reason. When the body is not adequately hydrated, blood volume drops and your heart has to work harder to power your muscles and keep you cool. Try to drink at least eight ounces of water before your run. Plan a route with stops at water fountains or bring fluids with you during the run. Grab an electrolyte-filled sports drink post run to help replenish sodium and potassium lost from sweating.