In New Orleans Weather Forecast, Meteorologist Payton Malone says humidity and above-average warmth will feel like summer. A taste of summer this week and the warm, muggy weather settles in. While it won't be quite as hot as summer, we climb into the mid to upper 80s each day. Our average high temperature at this point in May is 84, so we'll be a little above that this week. Humidity due will make it feel a few degrees warmer.