"Big Horn Bite: Fall Fishing Prime with Nymphs, Streamers, and More"

This is Artificial Lure with your Tuesday, November 4th, 2025, fishing report for Big Horn, Montana, and the surrounding river country. We woke to a crisp 49°F at sunrise and skies mostly clear over the canyon, with just a touch of southeast breeze rolling in at 5 to 10 mph. Expect a gorgeous fall day—highs reaching the mid 70s under mostly sunny skies, with just a chance of afternoon clouds. Sunset will drop fast tonight, so plan your evening bite around 5:03 PM. No tide swings to track here; river conditions are the name of the game. River flows on the Bighorn are dropping, and the big trout are leaving shallow riffles for deeper runs. The water’s running clear, and fish activity is solid with the recent cool nights lining them up for the nymph and streamer bite. Anglers this past week have pulled in healthy numbers of rainbow and brown trout, typically in the 14"–20" range. Folks have also reported cutbows and the odd whitefish, mostly on nymph rigs and flashy streamers. Montana Outdoor describes the fall fishing as “prime”—steady flows, clear water, and plenty of fish eager to eat. Best setups are nymphs under an indicator with worms, sow bugs, perdigons, Zirdles, Yuk Bugs, and midges working all day. North Fork Anglers recommends giving firebead sows and Montana Mouthwash a whirl. On the streamer side, Sculpzilla, Thin Mint, and Rusty Trombone have turned up some knuckle-buster browns, especially in the lower canyon and beneath cloudy afternoons. If you’re hoping for dry-fly action, keep an eye out for Blue Wing Olives and midges in the slackwater—there’s still a few sipping on top in the late morning. If you’re bringing bait, go with the classic—nightcrawlers and powerbait should do well on the slower sections if you’re after quantity more than quality. For the fly folks, flash and buggy profiles are your ticket. Spin-casters take note: spoons and small jigs are producing, especially in deeper pools and tailouts. Hot spots worth hitting right now: - **Afterbay to Soap Creek:** Deep runs just below the Afterbay Dam always hold good numbers in the fall, and the streamer game has been hot. - **Three Mile Access:** The riffle-drop pools beneath the access are holding migrating fish; work the nymphs through the pocket water. - **Bighorn Canyon Wild Bend:** The bend near Wild Bend is a sleeper for bigger browns when tossing heavy streamers on a cloudy afternoon. Despite the low flows, access is good—just keep an eye out for exposed debris if you’re wading or floating the Bighorn. Weather looks stable for the next few days, but grab an extra layer if fishing late; lows tonight will dip toward 50°F, and the weekend could bring a quick shot of rain and colder temps. No snow in the forecast, but fall’s grip is tightening—perfect conditions for aggressive fish. There’s been no recent word of lake trout or walleye in these upper sections, but downstream reservoirs are still turning out rainbows and the occasional fat perch. For those drifting ne This content was created in partnership and with the help of Artificial Intelligence AI.