Moon · August 2025
Moon calendar for Great Falls, Montana, United States: August 2025
Daily moon phases, illumination, moonrise and moonset in Great Falls, Montana, United States for August 2025. Full moon: August 9, 2025. All times are shown in the local time of Great Falls, Montana, United States.
Full moonSaturday, August 9, 2025, 2:33 AM
New moonFriday, August 22, 2025, 9:32 PM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | First Quarter | 53% | 2:25 PM | 12:03 AM |
| 2 | Waxing Gibbous | 62% | 3:39 PM | 12:21 AM |
| 3 | Waxing Gibbous | 71% | 4:32 PM | 12:37 AM |
| 4 | Waxing Gibbous | 79% | 5:43 PM | 1:33 AM |
| 5 | Waxing Gibbous | 86% | 6:28 PM | 2:12 AM |
| 6 | Waxing Gibbous | 92% | 7:30 PM | 3:14 AM |
| 7 | Waxing Gibbous | 97% | 7:57 PM | 4:15 AM |
| 8 | Full Moon | 99% | 8:23 PM | 5:33 AM |
| 9 | Full Moon | 100% | 8:38 PM | 6:31 AM |
| 10 | Waning Gibbous | 98% | 9:21 PM | 7:58 AM |
| 11 | Waning Gibbous | 93% | 9:34 PM | 9:29 AM |
| 12 | Waning Gibbous | 87% | 9:42 PM | 10:28 AM |
| 13 | Waning Gibbous | 78% | 10:05 PM | 11:58 AM |
| 14 | Waning Gibbous | 67% | 10:21 PM | 1:33 PM |
| 15 | Last Quarter | 56% | 10:38 PM | 2:47 PM |
| 16 | Last Quarter | 44% | 11:29 PM | 4:21 PM |
| 17 | Waning Crescent | 32% | — | 6:09 PM |
| 18 | Waning Crescent | 22% | 12:13 AM | 6:43 PM |
| 19 | Waning Crescent | 13% | 1:20 AM | 7:41 PM |
| 20 | Waning Crescent | 7% | 2:25 AM | 8:15 PM |
| 21 | Waning Crescent | 2% | 3:56 AM | 8:28 PM |
| 22 | New Moon | 0% | 5:28 AM | 8:48 PM |
| 23 | New Moon | 0% | 6:27 AM | 9:21 PM |
| 24 | Waxing Crescent | 3% | 7:45 AM | 9:32 PM |
| 25 | Waxing Crescent | 7% | 8:55 AM | 9:37 PM |
| 26 | Waxing Crescent | 13% | 10:10 AM | 9:42 PM |
| 27 | Waxing Crescent | 20% | 11:22 AM | 10:11 PM |
| 28 | Waxing Crescent | 28% | 12:20 PM | 10:23 PM |
| 29 | Waxing Crescent | 37% | 1:33 PM | 10:41 PM |
| 30 | First Quarter | 46% | 2:25 PM | 11:32 PM |
| 31 | First Quarter | 55% | 3:37 PM | — |
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Frequently asked questions
When is the full moon in August 2025 in Great Falls, Montana, United States?
The full moon peaks on Saturday, August 9, 2025, 2:33 AM (local time).
When is the new moon in August 2025?
The new moon falls on Friday, August 22, 2025, 9:32 PM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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