Moon · December 2025
Moon calendar for Decatur, Illinois, United States: December 2025
Daily moon phases, illumination, moonrise and moonset in Decatur, Illinois, United States for December 2025. Full moon: December 4, 2025. All times are shown in the local time of Decatur, Illinois, United States.
Full moonThursday, December 4, 2025, 5:18 PM
New moonFriday, December 19, 2025, 8:59 PM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Waxing Gibbous | 87% | 1:40 PM | 3:33 AM |
| 2 | Waxing Gibbous | 93% | 2:17 PM | 4:33 AM |
| 3 | Waxing Gibbous | 98% | 2:39 PM | 6:06 AM |
| 4 | Full Moon | 100% | 3:37 PM | 7:32 AM |
| 5 | Waning Gibbous | 99% | 4:25 PM | 8:28 AM |
| 6 | Waning Gibbous | 95% | 5:41 PM | 9:39 AM |
| 7 | Waning Gibbous | 89% | 6:56 PM | 10:24 AM |
| 8 | Waning Gibbous | 82% | 8:17 PM | 11:16 AM |
| 9 | Waning Gibbous | 72% | 9:34 PM | 11:37 AM |
| 10 | Waning Gibbous | 62% | 10:28 PM | 12:05 PM |
| 11 | Last Quarter | 52% | 11:41 PM | 12:22 PM |
| 12 | Last Quarter | 42% | — | 12:33 PM |
| 13 | Waning Crescent | 32% | 12:33 AM | 1:15 PM |
| 14 | Waning Crescent | 24% | 1:44 AM | 1:33 PM |
| 15 | Waning Crescent | 16% | 2:37 AM | 1:44 PM |
| 16 | Waning Crescent | 10% | 3:47 AM | 2:20 PM |
| 17 | Waning Crescent | 5% | 4:41 AM | 2:42 PM |
| 18 | Waning Crescent | 2% | 5:48 AM | 3:35 PM |
| 19 | New Moon | 0% | 6:36 AM | 4:20 PM |
| 20 | New Moon | 1% | 7:39 AM | 5:26 PM |
| 21 | Waxing Crescent | 3% | 8:22 AM | 6:18 PM |
| 22 | Waxing Crescent | 7% | 9:06 AM | 7:31 PM |
| 23 | Waxing Crescent | 13% | 9:37 AM | 8:23 PM |
| 24 | Waxing Crescent | 20% | 10:08 AM | 9:36 PM |
| 25 | Waxing Crescent | 30% | 10:26 AM | 10:33 PM |
| 26 | First Quarter | 40% | 10:44 AM | 11:51 PM |
| 27 | First Quarter | 51% | 11:29 AM | — |
| 28 | Waxing Gibbous | 63% | 11:41 AM | 1:19 AM |
| 29 | Waxing Gibbous | 74% | 12:15 PM | 2:22 AM |
| 30 | Waxing Gibbous | 83% | 12:33 PM | 3:40 AM |
| 31 | Waxing Gibbous | 91% | 1:33 PM | 5:06 AM |
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Frequently asked questions
When is the full moon in December 2025 in Decatur, Illinois, United States?
The full moon peaks on Thursday, December 4, 2025, 5:18 PM (local time).
When is the new moon in December 2025?
The new moon falls on Friday, December 19, 2025, 8:59 PM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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