Red Rocks and Painted Canyons

We just booked the Red Rocks and Painted Canyons Bridges tour. We are traveling with our 2 boys 10 and 15.The tour is the beginning of April? Has anyone gone on this tour at that time? How is the weather? They say the high should be around 60 and much colder at night?
Just wondering what I should bring as far as out door clothing. Will there still be some snow?
Any other suggestions?
Thanks!
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