Is the Bighorn River fishable right now?

Right now the Bighorn River is running 1,740 cfs, which rates fishable against its prime 2,500–4,500 cfs band. Today's bite odds are 49 out of 100, with partly cloudy (23% cloud). These are probabilistic odds from live data, not a guarantee — a sharp change in flow is the variable most likely to slow the fishing.

What is the best month to fish the Bighorn River?

The best months on the Bighorn River are October, November, March, April. These combine settled flows in the river's prime band with the season's strongest hatches. Bighorn River's overall season runs year-round tailwater; prime october–april & summer.

What flow (cfs) is good for fishing the Bighorn River?

The Bighorn River fishes best in roughly the 2,500–4,500 cfs range (its prime band). It stays fishable from about 1,500 cfs up toward 9,000 cfs; below that it's low and skinny, and above 9,000 cfs it's typically blown out and off-color. We compare the live USGS discharge to this band on every reading.

Bighorn River, Montana fishing report — flows, bite odds & best time to fish

Right now the Bighorn River is flowing 1,740 cfs — fishable, just off the prime band. Today's bite odds rate 49/100 (Fishable), and the sky looks partly cloudy.

1,740 cfscurrent flow

2,500–4,500prime band (cfs)

23%partly cloudy

Fishabletoday's read

Best time to fish the Bighorn River, Montana

The best months on the Bighorn River are October, November, March, April — when the flow settles into its prime band and the hatches line up, the odds genuinely worth booking around. Today's flow is one data point; the next 7 days below show how the bite window is trending. Plan ahead and book a guide for your dates.

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Know when the Bighorn River is fishing right

Flows and the bite shift week to week. Leave your email and we'll tell you when the Bighorn River hits its best window — time to book a guide for your dates.

Flow & bite outlook for the Bighorn River — the next 7 days

Thu 7 AM 49

Fri 7 AM 46

Sat 7 AM 43

Sun 7 AM 42

Mon 7 AM 42

Tue 7 AM 44

Wed 7 AM 47

Day	Flow (cfs)	Sky	Bite
Thu 7 AM	1,740	23% · partly cloudy	49 Fishable
Fri 7 AM	1,740	1% · clear skies	46 Fishable
Sat 7 AM	1,740	86% · overcast	43 Fishable
Sun 7 AM	1,740	27% · partly cloudy	42 Fishable
Mon 7 AM	1,740	7% · clear skies	42 Fishable
Tue 7 AM	1,740	31% · partly cloudy	44 Fishable
Wed 7 AM	1,740	4% · clear skies	47 Fishable

A ✓ means the flow sits in the Bighorn River's prime 2,500–4,500 cfs band — the season and the moon/solunar windows then move each day's bite odds.

Conditions & the best window

The prime bite is dawn and the last hour of light, strongest around the new and full moon. Today's sky on the Bighorn River looks partly cloudy (about 23% cloud) — and an overcast day can actually keep fish looking up. Watch the flow as much as the sky: a sharp change in discharge, up or down, can turn the fish off for a day.

The "Upper 13" from the Afterbay to Bighorn access is the famous stretch — best fished from a drift boat with a guide, with wadeable side channels and gravel bars throughout. Flows are set by dam releases, so check the discharge before you commit to a wade.

Guided trips & lodges on the Bighorn River

Links below go to live FishingBooker search results. We're finalizing our affiliate partnership — once active we'll earn a commission on bookings at no extra cost to you. Disclosure.

A guided day on the Bighorn River typically runs $500–$675 per boat. A local guide who knows the current flow and the productive water is the fastest way onto fish — book ahead for the dates you want.

Guided fly-fishing float trips on the Bighorn River

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Half-day walk & wade trips, Bighorn River

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Multi-day lodges & guided packages near the Bighorn River

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These are probabilistic fishability odds, not a guarantee. We build them from live USGS streamflow, each river’s published fishable-flow band, the curated season, and a moon/solunar model — flow and weather can change fast, and even a perfect flow on the right moon can fish slow. Some prime days disappoint; some marginal ones surprise. How we compute the score.