September marks the transition from summer to fall in Colorado, but this year is expected to start on the warmer side.
The average high temperature in Denver during September is around 80 degrees, while the average low is about 50 degrees. Long-range forecasts are pointing toward a warmer-than-average month across much of the state.
The latest NOAA Climate Prediction Center outlook also favors above-normal temperatures across the western United States, with some of the strongest odds for warmer-than-normal conditions in the northern Rockies and Intermountain West…