Here are the forecasts for this weekend's races:
NASCAR Nationwide Series - Road America on Saturday at 3 p.m. ET on ESPN. Conditions look pretty nice on Saturday with sunshine and some passing clouds. A stray shower or storm could fire up if a weak disturbance moves through the region. Chance of rain is 20% at this time. The temperature will be pleasant, near 78 degrees for the race.
NASCAR Sprint Cup - Sonoma on Sunday at 3 p.m. ET on TNT. It looks like a good weekend for racing in California. It will be a bit breezy on Friday afternoon for qualifying, but the temperature will be pleasant in the mid 70s with a sunny sky. Race day looks good day with a mostly sunny sky. The temperature at race time will be around 75 degrees.
IZOD IndyCar Series - Iowa on Saturday at 10 p.m. ET on NBC Sports Network. Saturday will be a nice day in Iowa with temperatures reaching the mid 80s in the afternoon under a partly cloudy sky. However, a disturbance crossing the region may support the development of showers and thunderstorms in the late afternoon and evening. Chance of storms is 40%. By the start of the race, the temperature will be a comfortable 75 degrees.
Grand-Am Rolex Sports Car Series - Road America on Saturday at Noon ET on SPEED. Saturday looks like a good day for racing in Elkhart Lake. It will sunny with some clouds building in during the afternoon. There's a 20% chance of a passing shower or storm. The temperature at race time will be near 75 degrees.
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