Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Phoenix to Windsor, Ontario as you normally would.
In terms of precipitation, rainfall in Windsor, Ontario ranges from 2.4 - 3.7 inches per month. September is typically the wettest month, when rainfall can reach 3.7 in. January is typically the driest time to visit Windsor, Ontario when rainfall is around 2.4 in.
If weather is an important factor for your trip to Windsor, Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).