Thursday: Sunny skies and warm. Daytime high will be around 80 degrees after starting off in the upper 50s at 7:00 am. Winds will be out of the northeast at 2-5 MPH to start, but will shift out of the southeast at 5-10 MPH late in the day.
Friday: Pretty close to a carbon copy forecast to Thursday as there will be plenty of sunshine with the high reaching the lower 80s after starting of around 60 degrees at 7:00 am. Winds will be out of the W at 2-5 MPH to start, but will shift out of the south at 5-10 MPH by the afternoon.
Saturday: Skies will be mostly sunny to start, but clouds will begin to increase making it partly cloudy over Road America. There is a very small risk of an isolated shower or thunderstorm, but odds are really stacked against that at this point. The temperature will start off in the mid-60s at 7:00 am and will warm into the lower 80s for the daytime high. Winds will be out of the northeast to east at 5-10 MPH.
Sunday: A near perfect day for the main event at Road America. Mainly sunny skies with the daytime high reaching the lower 80s after temperatures start off in the mid-60s at 7:00 am. Winds will shift from out of the northeast at 2-5 MPH in the morning to out of the southeast at 5-10 MPH to end the racing day.
Remember, the weather is always changing, so modifications to the forecast can and will be made on the latest data. Radar will be up and running by Thursday afternoon. Have a great night.