Let the weather guide you! ;)
Here's a great tour/vacation finding tool for those of you that have never seen it. Pick the month, the lowest temperature you want to experience, the highest temp and then the site will find all the possibilities.
http://www.weatherbase.com/weather/vacation/
Cheers,
Ron
South Ogden, Utah
http://miles2go.crazyguyonabike.com
http://www.pbase.com/canyonlands/