From Toronto in mid September to Quebec City in late September, hypothetically you really could encounter everything from shorts-and-sunscreen weather to boots-and-jacket weather.
The driving distance between Denver, CO and Salt Lake City, UT is 536 miles. The driving time would be approximately 8 hours 30 minutes if driving non-stop in good conditions.
The weather is pleasant in Salt Lake City for more than 10% of the year and it received 69.9 inches of snow in 2013. Denver has about 300 days of sunshine a year, but itâs defined as pleasant only 10% of the time.