Denver is experiencing a significant cooldown following record-high temperatures, with highs set to drop from 102 degrees last Sunday to 70 degrees by Thursday. This marks the first time since May that temperatures will dip below 70 degrees, and scattered thunderstorms are expected over the next few days. Meanwhile, Fort Collins is also bracing for a drastic weather shift, having tied its record for consecutive days over 90 degrees, with a forecasted high of 95 degrees ahead of a cooling trend and potential rain. In a related note, Needles, California, recently set a record for the hottest monthly temperature in a U.S. city at 103.2 degrees, surpassing Phoenix's previous record of 102.7 degrees. Colorado is also facing air quality issues due to smoke from out-of-state wildfires, which complicates the weather relief. Overall, a pattern change is anticipated across the region as temperatures begin to cool down after an extended heatwave.