During the daytime on Sunday, it will be a near carbon copy of Saturday. Mostly clear skies and hot again, with highs reaching 90. Heat index will reach near 100. Winds will be out of the south at 5-10 MPH. No chance of rain. Sunday evening near race time (7PM), temperatures will still be pretty warm in the middle 80s. Heat index will still be in the upper 90s at this time. Winds will be from the south at 5-10 MPH. No chance of rain.
If you will be attending the events at Iowa Speedway, please remember to sunscreen up and stay hydrated. Radar will be up on our website (www.racecastweather.com), even though it looks like we will not be using it (and that's good news). I'll have updates on my Twitter feed (@RaceWx4You) throughout the week.