Moon phase, moonrise and moonset times in Boulder, Colorado, United States
Current local time 1:57:04 PM (UTC-7)
Today, December 8
- Moonset10:15 AMMoonrise8:19 PM
- Moon PhaseWaning gibbousIlumination81%
Tomorrow, December 9
- Moonset10:52 AMMoonrise9:25 PM
- Moon PhaseWaning gibbousIlumination71%
- Full Moon4 December4:14 PM
- Third Quarter11 December1:51 PM
- New Moon19 December6:43 PM
- First Quarter27 December12:10 PM
- Full Moon3 January3:03 AM
December 2025 — Moon in Boulder
| Icon | Date | Moonrise | Moonset | Moonrise | Moon phase | Illumination | |
|---|---|---|---|---|---|---|---|
| December 1 | Mon | — | 3:26 AM | 2:33 PM | Waxing gibbous | 86% | |
| December 2 | Tue | — | 4:31 AM | 3:06 PM | Waxing gibbous | 93% | |
| December 3 | Wed | — | 5:37 AM | 3:43 PM | Waxing gibbous | 98% | |
| December 4 | Thu | — | 6:42 AM | 4:26 PM | Full moon | 100% | |
| December 5 | Fri | — | 7:44 AM | 5:16 PM | Waning gibbous | 99% | |
| December 6 | Sat | — | 8:41 AM | 6:13 PM | Waning gibbous | 95% | |
| December 7 | Sun | — | 9:31 AM | 7:15 PM | Waning gibbous | 89% | |
| December 8 | Mon | — | 10:15 AM | 8:19 PM | Waning gibbous | 81% | |
| December 9 | Tue | — | 10:52 AM | 9:25 PM | Waning gibbous | 71% | |
| December 10 | Wed | — | 11:25 AM | 10:31 PM | Waning gibbous | 61% | |
| December 11 | Thu | — | 11:55 AM | 11:36 PM | Third quarter | 51% | |
| December 12 | Fri | — | 12:23 PM | — | Waning crescent | 41% | |
| December 13 | Sat | 12:41 AM | 12:50 PM | — | Waning crescent | 32% | |
| December 14 | Sun | 1:46 AM | 1:18 PM | — | Waning crescent | 23% | |
| December 15 | Mon | 2:52 AM | 1:48 PM | — | Waning crescent | 16% | |
| December 16 | Tue | 3:58 AM | 2:22 PM | — | Waning crescent | 9% | |
| December 17 | Wed | 5:03 AM | 3:02 PM | — | Waning crescent | 5% | |
| December 18 | Thu | 6:08 AM | 3:47 PM | — | Waning crescent | 1% | |
| December 19 | Fri | 7:08 AM | 4:39 PM | — | New moon | 0% | |
| December 20 | Sat | 8:03 AM | 5:37 PM | — | Waxing crescent | 0% | |
| December 21 | Sun | 8:51 AM | 6:40 PM | — | Waxing crescent | 3% | |
| December 22 | Mon | 9:33 AM | 7:45 PM | — | Waxing crescent | 7% | |
| December 23 | Tue | 10:09 AM | 8:51 PM | — | Waxing crescent | 13% | |
| December 24 | Wed | 10:41 AM | 9:57 PM | — | Waxing crescent | 20% | |
| December 25 | Thu | 11:09 AM | 11:02 PM | — | Waxing crescent | 29% | |
| December 26 | Fri | — | — | 11:37 AM | Waxing crescent | 39% | |
| December 27 | Sat | — | 12:07 AM | 12:04 PM | First quarter | 50% | |
| December 28 | Sun | — | 1:12 AM | 12:33 PM | Waxing gibbous | 61% | |
| December 29 | Mon | — | 2:18 AM | 1:04 PM | Waxing gibbous | 72% | |
| December 30 | Tue | — | 3:24 AM | 1:40 PM | Waxing gibbous | 82% | |
| December 31 | Wed | — | 4:29 AM | 2:21 PM | Waxing gibbous | 90% |
| Fort Collins | Greeley | Longmont | Boulder | Avondale | Juneau | Redding |