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Night sky tonight in Colorado

Tonight's score out of 10 and the best hours for each Colorado city we cover, worked out for its own position and time zone. Open a city for the full forecast: the Moon, planets, meteor showers, northern lights, ISS passes and clouds.

Cities in Colorado

CityTonightBest timeHighlightsNorthern lights need
Denver……Kp 7.5
Colorado Springs……Kp 7.7
Fort Collins……Kp 7.4
Pueblo……Kp 7.8
Boulder……Kp 7.5
Castle Rock……Kp 7.6
Grand Junction……Kp 7.7
Montrose……Kp 7.9

Scores before clouds; each city page adds the National Weather Service cloud forecast. Northern lights: see tonight's aurora outlook for Colorado.

Darkness across Colorado

How early it gets dark in midwinter and how short the summer nights get, city by city, and how far each city is from the nearest certified dark-sky place.

CitySunset Dec 15Full darkness Dec 15Sunset Jun 15Full darkness Jun 15Nearest dark-sky place
Denver4:36 PM11.4 h8:29 PM5 hGolden Gate Canyon State Park, 28 mi W
Colorado Springs4:38 PM11.4 h8:26 PM5.2 hFlorissant Fossil Beds National Monument, 28 mi W
Fort Collins4:34 PM11.4 h8:33 PM4.8 hJackson Lake State Park, 52 mi E
Pueblo4:39 PM11.3 h8:24 PM5.3 hWestcliffe and Silver Cliff, Colorado, 47 mi W
Boulder4:37 PM11.4 h8:32 PM4.9 hGolden Gate Canyon State Park, 16 mi SW
Castle Rock4:37 PM11.4 h8:28 PM5 hFlorissant Fossil Beds National Monument, 39 mi SW
Grand Junction4:53 PM11.4 h8:42 PM5.1 hGunnison Gorge National Conservation Area, 49 mi SE
Montrose4:52 PM11.3 h8:37 PM5.3 hBlack Canyon of the Gunnison National Park, 11 mi NE

Moon-free nights in Colorado, month by month

The runs of nights when the Moon is down for most of full darkness, worked out for Denver; across the state the dates shift by a night at most.

  • November 2026: Nov 3–15
  • December 2026: Dec 2–14, Dec 31
  • January 2027: Jan 1–13, Jan 29–31
  • February 2027: Feb 1–11, Feb 27–28
  • March 2027: Mar 1–12, Mar 28–31
  • April 2027: Apr 1–9, Apr 27–30
  • May 2027: May 1–9, May 28–31
  • June 2027: Jun 1–8, Jun 29–30
  • July 2027: Jul 1–10, Jul 29–31
  • August 2027: Aug 1–4, Aug 6–9, Aug 27–31
  • September 2027: Sep 1–7, Sep 25–30
  • October 2027: Oct 1–6, Oct 24–31
  • November 2027: Nov 1–4, Nov 21–30
  • December 2027: Dec 1–3, Dec 20–31

Dark-sky places in Colorado

Descriptions and moon-free weekends

Eclipses visible in Colorado

All states