It's July in Colorado and we get "monsoon" moisture. That is the flow of air comes form the south and pulls moisture in from Mexico. This year has been higher then usual so we have had a lot of rain in most areas. Yesterday we even had tornadoes in the Denver area but fortunately there wasn't much damage. And yes, the next 3-4 days there will be a high chance of rain, especially east of the continental divide. And cooler temps, 70's in Denver and cooler to the west. You might even see a dusting of snow on the high peaks. So enjoy the views and the area and make the best of it!