A west to northwest flow will bring the marine layer into the Monterey Peninsula each night, resulting in low clouds forming. These clouds will linger through the morning, and dissipate by noon, leaving mostly sunny skies on Friday and Saturday afternoons. On Sunday, the moisture will get a little deeper as a cold front approaches from the northwest. This could squeeze out a little rain, probably just a couple hundredths of an inch at most. Rain could fall during the Sunday morning warm-up session, but again, the light nature of the rain should not have much of an impact. For the race, it will be partly sunny with temperatures in the 60s.