I’m planning a trip to Arizona in June and since school will be out for summer vacation, the dates for my trip don’t matter as much as the cost of the rental car. I’ve checked several different booking sites and the rates are always different depending on the days of the rental, for example, a car from Wednesday June 15th – Sunday June 19th might be $36 a day but a car from Friday -Tuesday could be only $20 a day. Is there a way to find out what days are going to have the lowest price per day within the month? I’ve tried calling a few different rental companies but they have all been ridiculously unhelpful.