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On Wednesday and Wednesday night, there will be numerous showers and thunderstorms in the Finger Lakes region of New York as a cold front moves across the area. These showers should be gone by the time practice sessions start on Thursday morning. Temperatures will be very nice on Thursday, with highs in the mid 70s and comfortable humidity levels.
Through Friday and Saturday, a large high pressure ridge will be moving across the region from west to east. This will provide mostly sunny skies both days, with temperatures warming into the lower to mid 80s as a southerly flow develops on the west side of the high.
Sunday is the day with the most uncertainty, as there will be increasing instability and a low pressure trough approaching from the west. The question is the timing of this system - will showers hold off until after the race ends around 4:40 pm EDT? As of today, I think the most likely scenario is that the rain arrives after the race ends, so I have just a 20% chance in the forecast. This could change as we go through the week, so check back here for updates.