The fire season starts as early as March in the southeastern United States, and by April, fires pop up in the Southwest.
The investigation into the cause of the fire has been completed, but an outside probe is being conducted to vet the results before release.
That number of at-risk Coloradans soared 45 percent in just five years, from 2 million to nearly 3 million.
A United Nations report out this week said the world is due for "rapid and far-reaching" changes by 2030 because of global warming.
The Ryan Fire exploded over the weekend, growing from 3,000 acres on Friday to 19,000. The fire is burning mostly in Wyoming.
Jesper Joergensen, a Denmark native, told police that he started a fire to burn trash, and then that he was grilling in a fire pit.
Record-breaking heat last week and over the weekend hasn't helped firefighters battling wildfires across the state.
Hot weather and wind caused the Silver Creek Fire to flare up Wednesday evening, growing at least 1,000 acres.
A study from the University of Idaho found that wildland firefighters are fatigued and have delayed reaction times, which may be a result of not getting enough sleep. The study leaves more questions than answers.
Higher temperatures and low humidity may challenge firefighters later this week. Otherwise, fire restrictions and fires overall are slowing down in Colorado.