Yellowstone River

January Outlook

River closed for winter. Yellowstone National Park roads are closed to wheeled vehicles. No fishing access.

Tips

Plan your summer trip. Park fishing permits can be purchased at any visitor center once the park opens.

Water Notes

River frozen or near-frozen. Park closed.

February Outlook

River closed. Park roads remain closed. No fishing access to the Yellowstone inside the park.

Tips

Early planning season. Check NPS opening dates — bear management closures affect many sections through mid-July.

Water Notes

River ice-covered. Park winter season.

March Outlook

Park still in winter operations. No fishing access to most of the Yellowstone inside the park.

Tips

Park typically begins plowing roads in March. Fishing opens on different dates for different sections — check NPS regulations.

Water Notes

Snow and ice persist. High-elevation runoff not yet started.

April Outlook

Park roads beginning to open but most river sections still under bear management closures or seasonal closures. Very limited fishing opportunity.

Tips

Check NPS opening dates. Some sections near Gardiner may be accessible but most of the river remains closed. Focus on rivers outside the park for April fishing.

Water Notes

Snowmelt beginning. River rising and cold.

May Outlook

Park opens but bear management closures persist on most Yellowstone River sections. Fishing Bridge and Buffalo Ford areas closed. Limited access near the Gardiner entrance.

Productive Patterns

• Pat's Rubber Legs #8
• BWO Parachute #18
• Pheasant Tail #16

Tips

Only sections near the north entrance may be fishable. Check current NPS closure status before planning. Water is high and cold from snowmelt.

Water Notes

Full spring runoff. River high, cold, and turbid in most sections.

June Outlook

Bear closures continue on most sections. Black Canyon below Tower may be open — check NPS. Water high and cold from snowmelt. Limited but improving fishing opportunity.

Productive Patterns

• BWO Parachute #18
• Elk Hair Caddis #16
• Pat's Rubber Legs #8
• Prince Nymph #14

Tips

The Black Canyon between Tower Junction and Gardiner may be open and fishable before other sections. Nymphing is most productive while water remains high. Check NPS closure status daily.

Water Notes

Peak runoff typically late June. River dropping and clearing toward month's end.

July Outlook

Season opener. Buffalo Ford and Hayden Valley sections typically open mid-July after bear closures lift. Cutthroat are eager and aggressive. BWO and caddis hatches active. This is the start of prime time.

Productive Patterns

• BWO Sparkle Dun #18
• Elk Hair Caddis #16
• PMD Comparadun #16
• Prince Nymph #14

Tips

Check NPS for exact opening dates — they vary by year. Cutthroat at Buffalo Ford are aggressive on opening day. Fish the meadow sections for rising fish. Barbless hooks and catch-and-release mandatory throughout the park.

Water Notes

Flows dropping to fishable levels. Water temps climbing into ideal range (50–60°F).

August Outlook

Peak month on the Yellowstone inside the park. Buffalo Ford sight fishing at its best — PMD mornings, caddis evenings. Hoppers along grassy meadow banks. Cutthroat feeding actively throughout the day.

Productive Patterns

• PMD Sparkle Dun #16
• Dave's Hopper #10
• Elk Hair Caddis #16
• Chubby Chernobyl #10

Tips

Buffalo Ford is the premier spot — wade carefully on the shallow flats and sight-fish to rising cutthroat. Black Canyon below Tower produces excellent dry fly fishing for hikers willing to earn it. Evening caddis in the National Park Meadows.

Water Notes

Ideal flows and temps. Water 55–62°F. Clear and fishable throughout.

September Outlook

Prime time continues with cooler air temps and thinning crowds. Fall BWOs start on overcast days. Cutthroat in peak condition before spawning. Hayden Valley can be magical on grey afternoons.

Productive Patterns

• BWO Sparkle Dun #18
• Elk Hair Caddis #16
• Parachute Adams #16
• Pheasant Tail #16

Tips

September is arguably the finest month on the park Yellowstone — fish are in peak condition, crowds thin dramatically after Labor Day, and fall Baetis hatches provide excellent dry fly fishing. Hayden Valley on an overcast afternoon is a transcendent experience.

Water Notes

Flows stable and low. Water temps cooling (52–58°F). Crystal clear.

October Outlook

Late season. Brown trout from the lake running into the river below the falls. Cutthroat still active but water temps dropping. Park closes some roads after Columbus Day weekend.

Productive Patterns

• BWO Parachute #18
• Woolly Bugger #6
• Pheasant Tail #16
• Streamers

Tips

Check road closures — the park begins shutting down for winter in October. Last few days before closure can be outstanding with zero pressure. Brown trout from Yellowstone Lake may be encountered below the falls.

Water Notes

Water cooling rapidly (45–52°F). Flows low and clear.

November Outlook

Season ends early November when park roads close for winter. The last few fishing days can be outstanding for hardy anglers willing to brave the cold.

Productive Patterns

• BWO Parachute #18
• Zebra Midge #22
• Pheasant Tail #16

Tips

Only the first few days of November are typically fishable before road closures. Check NPS for exact closing dates. Dress for winter conditions — it snows in Yellowstone in November.

Water Notes

Near-freezing water temps. Park closing for winter.

December Outlook

Park closed for winter. No fishing access to the Yellowstone River inside the park.

Tips

Winter season. Plan for next year's park fishing.

Water Notes

River frozen or near-frozen. Park roads closed.