The models have started to come into better agreement on the timing of rain being mainly on Friday night. I expect that rain won't fall in Toronto until after sunset, well after the end of any on-track activity on Friday. With the later arrival time for rain chances, Friday should have more sun and temperatures should reach the mid 80s. As I mentioned in the previous forecast, any rain is expected to be pretty light and scattered, and that is still the case. The front should move through the area early Saturday morning, and a light shower or sprinkle could be possible after sunrise. As a result, I have just a slight chance of rain mentioned for Saturday morning, with no impact expected on the racing. If rain does fall on Friday night and Saturday morning, I expect it will be around a tenth of an inch or less.
High pressure through the lower and mid levels of the atmosphere will build over the Great Lakes region for Sunday, which will bring warm temperatures and plenty of sunshine.Highs on Sunday afternoon are still expected to reach the upper 80s, with light winds.