The weather pattern through mid-week will feature a large high pressure ridge over the Mississippi and Tennessee Valley region, which will supply dry and stable air from the north into Louisiana. This will provide sunny to mostly sunny skies at the track on Thursday and Friday, and the humidity levels will be relatively comfortable for New Orleans. The high pressure area will be shifting east, becoming positioned near the Atlantic coast. This will result in a more southeasterly flow off the Gulf of Mexico into Louisiana, and higher humidity levels. The added moisture will bring more clouds, and possibly an isolated shower or thunderstorm on Saturday. At this point, it doesn't look like a big deal, and I only have the chance of rain at 20%. Most likely, the race will be run in dry conditions.