Typical September weather
Denver
Colorado · September
80° days
48° nights
about 3 rainy days · 12½ hours of daylight
What to pack
- Light jacket
- Sunscreen
- Layers
What September feels like
Dry, blue, and the aspens start turning in the high country from about the third week. Kenosha and Guanella passes go bumper-to-bumper on gold weekends — go on a Tuesday or make peace with the parade.
Expect about 3 days with real rain — enough to notice, not enough to plan around.
The numbers
| Typical high | 80° |
|---|---|
| Typical low | 48° |
| Days with real rain | 3 |
| Total rain | 1.5 in |
| Snowfall | 0.8 in |
| Sunrise / sunset (mid-month) | 6:41 am / 7:08 pm |