Fishing Report Updated October 21, 2021

This Yellowstone River fishing report is valid from October 21 until about November 10.

Dry fly fishing is fading out fast on the Yellowstone, and the fishing overall is less consistent now than it was 2-3 weeks ago. That said, crowds are down and there are big fish to be had. Probably the most consistent tactic is to nymph or fish streamer-nymph combos under indicators in areas of deep water downstream of brown trout spawning areas. BWO nymphs or eggs behind a stonefly or jig-style Woolly Bugger will get lots of non-spawning trout as well as pre-spawn browns. For shots at the largest browns, fish large streamer runs with swung streamer techniques.

Hatch activity is now limited to BWO and midges. The latter will tend to pop earlier in the day, the BWO after lunch. The best hatches will be on warm, gray, calm afternoons. Fish a larger visible pattern (Hazy Cripple, Royal Wulff Cripple) with either a hatch-matching BWO, a BWO emerger, or a small BWO nymph behind the dry you can see.

Unless you are trying for a mongo brown, no reason to start before at least 11:00 now, and the consistent fishing will be over by 5:00 at the latest.

Learn more about fishing the Yellowstone River (in Montana).

Learn more about our float trips, a majority of which take place on the Yellowstone.

Learn more about our Montana walk & wade trips, which in winter and early spring take place on the Yellowstone.

Yellowstone River Fishing Report – Relevant Links