Evan is spot on. You're looking for the crystal ball that nobody has. You should be fine floating down that section of the Poudre that time of the year. Late June/ early July usally equals nice sunny weather and average flows. Nothing too high and nothing too low to paddle. Have fun and start planning your Colorado vacation. You'll love the Poudre and don't forget to spend a little time in Fort Collins. It's a great town, with lot's of cool folks, great bars, and tons of great places to grab someting to munch on.
I love to dance, but who needs the music- It throws me off.