Moon · May 2025
Moon calendar for Great Falls, Montana, United States: May 2025
Daily moon phases, illumination, moonrise and moonset in Great Falls, Montana, United States for May 2025. Full moon: May 12, 2025. All times are shown in the local time of Great Falls, Montana, United States.
Full moonMonday, May 12, 2025, 1:11 PM
New moonMonday, May 26, 2025, 6:39 PM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Waxing Crescent | 21% | 8:03 AM | 1:44 AM |
| 2 | Waxing Crescent | 30% | 9:22 AM | 2:30 AM |
| 3 | First Quarter | 41% | 10:25 AM | 3:25 AM |
| 4 | First Quarter | 51% | 11:52 AM | 3:41 AM |
| 5 | Waxing Gibbous | 62% | 1:51 PM | 4:02 AM |
| 6 | Waxing Gibbous | 71% | 2:23 PM | 4:18 AM |
| 7 | Waxing Gibbous | 80% | 3:37 PM | 4:24 AM |
| 8 | Waxing Gibbous | 87% | 4:30 PM | 4:32 AM |
| 9 | Waxing Gibbous | 93% | 5:44 PM | 4:52 AM |
| 10 | Waxing Gibbous | 97% | 6:45 PM | 5:22 AM |
| 11 | Full Moon | 99% | 8:01 PM | 5:34 AM |
| 12 | Full Moon | 100% | 9:16 PM | 5:46 AM |
| 13 | Waning Gibbous | 99% | 10:12 PM | 6:18 AM |
| 14 | Waning Gibbous | 96% | 11:22 PM | 6:46 AM |
| 15 | Waning Gibbous | 91% | — | 7:41 AM |
| 16 | Waning Gibbous | 85% | 12:12 AM | 8:30 AM |
| 17 | Waning Gibbous | 77% | 12:46 AM | 9:44 AM |
| 18 | Waning Gibbous | 67% | 1:34 AM | 11:05 AM |
| 19 | Last Quarter | 57% | 1:55 AM | 12:20 PM |
| 20 | Last Quarter | 46% | 2:21 AM | 1:38 PM |
| 21 | Waning Crescent | 34% | 2:29 AM | 2:56 PM |
| 22 | Waning Crescent | 24% | 2:53 AM | 4:20 PM |
| 23 | Waning Crescent | 15% | 3:25 AM | 5:41 PM |
| 24 | Waning Crescent | 7% | 3:36 AM | 7:20 PM |
| 25 | Waning Crescent | 2% | 3:52 AM | 8:31 PM |
| 26 | New Moon | 0% | 4:19 AM | 10:08 PM |
| 27 | New Moon | 1% | 4:56 AM | 11:34 PM |
| 28 | Waxing Crescent | 4% | 5:47 AM | — |
| 29 | Waxing Crescent | 10% | 6:52 AM | 12:25 AM |
| 30 | Waxing Crescent | 17% | 8:31 AM | 1:22 AM |
| 31 | Waxing Crescent | 26% | 9:37 AM | 1:43 AM |
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Frequently asked questions
When is the full moon in May 2025 in Great Falls, Montana, United States?
The full moon peaks on Monday, May 12, 2025, 1:11 PM (local time).
When is the new moon in May 2025?
The new moon falls on Monday, May 26, 2025, 6:39 PM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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