Fishing Calendar App
Fishing Calendar for Yellowstone River (Montana), United States
The longest undammed river in the lower 48 states, the Yellowstone in Montana is a blue-ribbon fly-fishing destination for wild brown trout and rainbow trout, with cooler headwaters holding native cutthroat trout.
Best fishing times in August 2026
| Date | Moon | Sunrise | Sunset | Major periods | Minor periods | Efficiency |
|---|---|---|---|---|---|---|
| Sat 01 | Waning gibbous | 06:06 | 20:49 | 02:26–04:26, 14:50–16:50 | 08:38–10:38, 21:02–23:02 | 12% ●○○○○ |
| Sun 02 | Waning gibbous | 06:07 | 20:48 | 03:09–05:09, 15:33–17:33 | 09:21–11:21, 21:45–23:45 | 10% ●○○○○ |
| Mon 03 | Waning gibbous | 06:08 | 20:47 | 03:57–05:57, 16:22–18:22 | 10:09–12:09, 22:34–00:34 | 32% ●●○○○ |
| Tue 04 | Waning gibbous | 06:09 | 20:45 | 04:43–06:43, 17:09–19:09 | 10:56–12:56 | 70% ●●●●○ |
| Wed 05 | Waning gibbous | 06:10 | 20:44 | 05:32–07:32, 18:01–20:01 | 23:18–01:18, 11:47–13:47 | 96% ●●●●● |
| Thu 06 | Waning crescent | 06:12 | 20:42 | 06:26–08:26, 18:57–20:57 | 00:11–02:11, 12:42–14:42 | 90% ●●●●● |
| Fri 07 | Waning crescent | 06:13 | 20:41 | 07:25–09:25, 19:58–21:58 | 01:09–03:09, 13:42–15:42 | 55% ●●●○○ |
| Sat 08 | Waning crescent | 06:14 | 20:40 | 08:28–10:28, 21:03–23:03 | 02:11–04:11, 14:45–16:45 | 20% ●●○○○ |
| Sun 09 | Waning crescent | 06:15 | 20:38 | 09:33–11:33, 22:07–00:07 | 03:16–05:16, 15:50–17:50 | 15% ●○○○○ |
| Mon 10 | Waning crescent | 06:16 | 20:37 | 10:36–12:36 | 04:20–06:20, 16:53–18:53 | 50% ●●●○○ |
| Tue 11 | Waning crescent | 06:18 | 20:35 | 23:05–01:05, 11:36–13:36 | 05:21–07:21, 17:52–19:52 | 92% ●●●●● |
| Wed 12 | Waning crescent | 06:19 | 20:33 | 00:03–02:03, 12:31–14:31 | 06:17–08:17, 18:46–20:46 | 100% ●●●●● |
| Thu 13 | New moon | 06:20 | 20:32 | 00:55–02:55, 13:22–15:22 | 07:09–09:09, 19:35–21:35 | 88% ●●●●● |
| Fri 14 | Waxing crescent | 06:21 | 20:30 | 01:44–03:44, 14:09–16:09 | 07:57–09:57, 20:22–22:22 | 45% ●●●○○ |
| Sat 15 | Waxing crescent | 06:22 | 20:29 | 02:30–04:30, 14:55–16:55 | 08:43–10:43, 21:07–23:07 | 13% ●○○○○ |
| Sun 16 | Waxing crescent | 06:24 | 20:27 | 03:15–05:15, 15:40–17:40 | 09:27–11:27, 21:52–23:52 | 17% ●○○○○ |
| Mon 17 | Waxing crescent | 06:25 | 20:25 | 04:00–06:00, 16:24–18:24 | 10:12–12:12, 22:37–00:37 | 23% ●●○○○ |
| Tue 18 | Waxing crescent | 06:26 | 20:24 | 04:45–06:45, 17:11–19:11 | 10:58–12:58 | 47% ●●●○○ |
| Wed 19 | Waxing crescent | 06:27 | 20:22 | 05:32–07:32, 17:58–19:58 | 23:19–01:19, 11:45–13:45 | 64% ●●●●○ |
| Thu 20 | First quarter | 06:29 | 20:20 | 06:21–08:21, 18:48–20:48 | 00:07–02:07, 12:34–14:34 | 60% ●●●●○ |
| Fri 21 | Waxing gibbous | 06:30 | 20:19 | 07:11–09:11, 19:39–21:39 | 00:57–02:57, 13:25–15:25 | 39% ●●○○○ |
| Sat 22 | Waxing gibbous | 06:31 | 20:17 | 08:02–10:02, 20:30–22:30 | 01:49–03:49, 14:16–16:16 | 16% ●○○○○ |
| Sun 23 | Waxing gibbous | 06:32 | 20:15 | 08:54–10:54, 21:21–23:21 | 02:40–04:40, 15:07–17:07 | 11% ●○○○○ |
| See efficiency and feeding times for every day in the Fishing Calendar app — get it for iOS or Android. | ||||||
| Mon 24 | Waxing gibbous | 06:33 | 20:13 | ····· | ····· | Unlock · iOS / Android |
| Tue 25 | Waxing gibbous | 06:35 | 20:12 | ····· | ····· | Unlock · iOS / Android |
| Wed 26 | Waxing gibbous | 06:36 | 20:10 | ····· | ····· | Unlock · iOS / Android |
| Thu 27 | Full moon | 06:37 | 20:08 | ····· | ····· | Unlock · iOS / Android |
| Fri 28 | Waning gibbous | 06:38 | 20:06 | ····· | ····· | Unlock · iOS / Android |
| Sat 29 | Waning gibbous | 06:39 | 20:04 | ····· | ····· | Unlock · iOS / Android |
| Sun 30 | Waning gibbous | 06:41 | 20:03 | ····· | ····· | Unlock · iOS / Android |
| Mon 31 | Waning gibbous | 06:42 | 20:01 | ····· | ····· | Unlock · iOS / Android |
Fish recorded in this region
-
Rainbow trout
Oncorhynchus mykiss
-
Brown trout
Salmo trutta
-
Alabama bass
Micropterus henshalli
-
Alabama hog sucker
Hypentelium etowanum
-
Allegheny river pike
Esox masquinongy punctulatus
-
Alligator gar
Atractosteus spatula
-
American paddlefish
Polyodon spathula
-
American pickerel
Esox americanus
-
American pickerel
Esox americanus vermiculatus
-
Banded killifish
Fundulus diaphanus
-
Banded sunfish
Enneacanthus obesus
-
Bantam sunfish
Lepomis symmetricus
Frequently asked questions
- When is the best time to fish at Yellowstone River (Montana)?
- The highest-rated day in the current month at Yellowstone River (Montana) is 12 August 2026, with a fishing efficiency of 100%. The strongest feeding window is around 00:03–02:03 local time.
- What fish can you catch in Yellowstone River (Montana)?
- Species recorded in the same waters and region as Yellowstone River (Montana) include Rainbow trout, Brown trout, Alabama bass, Alabama hog sucker, Allegheny river pike. This list is matched from regional occurrence data by water type and area, so not every species is present in Yellowstone River (Montana) itself.
- Do moon phases affect fishing at Yellowstone River (Montana)?
- Solunar theory links feeding activity to the moon's position. Major periods occur when the moon is overhead or underfoot, with shorter minor periods midway between them. New and full moons generally produce the strongest activity.