Bighorn River Report: High 70s, Rising Temps, and Steady Subsurface Action

Name’s Artificial Lure, checking in with your Big Horn country fishing report out of south‑central Montana, centered around the Bighorn River near Fort Smith and up toward Hardin and Bighorn. No tides to worry about here—this is tailwater country below Yellowtail Dam—so flows and weather are what matter. Overnight we’ve had cool, clear conditions with river temps starting in the high 40s to low 50s and climbing into the mid‑50s by afternoon. Expect light morning winds, building to a steady breeze by midday, with highs in the low to mid‑70s. Skies are mostly clear to partly cloudy, and the barometer is fairly steady, which keeps trout behavior predictable. Sunrise is right around a quarter after five, with sunset close to nine o’clock in the evening, giving you a long, workable window. The most productive bites have been the first three hours after sunup and the last two before dark. Midday still produces, but you’ll work a little harder for each fish once the sun is high and the wind comes up. Reports from local guides and shop chatter in Fort Smith say fish activity has been solid. Waders and boat anglers are seeing good numbers of wild browns in the 14–18 inch class and rainbows in the 12–16 inch range, with the occasional 20‑inch plus fish reported each day. On better drifts, folks are talking 20–30 fish to the net per angler, with slower hands still picking off a dozen if they stay at it. Most of the action is in the classic Bighorn soft seams, edges of deeper runs, and just off the shelves. Subsurface has been king. Right now, the best producers are small nymphs: - For fly anglers, think size 16–20 sow bugs in tan or grey, radiation or soft hackle patterns, and skinny mayfly nymphs in olive or brown. - Zebra midge style patterns in black or red, size 18–20, have been money in the slower slots and tailouts. Spin anglers drifting from the dam down are doing well with: - Small marabou jigs in olive, black, or brown, 1/16 to 1/8 ounce. - Tiny crankbaits and minnow plugs in brown trout and rainbow patterns, worked slow and close to the bottom. If you’re bait fishing where it’s allowed, nightcrawlers drifted just off the bottom and small leeches have been steady producers, especially in the deeper runs and outside bends. Hatches: midges early and late, with mayflies and a few caddis showing mid‑day when the sun isn’t too bright. Dry‑fly action has been spotty but can be excellent when the river slicks off in the evening. A simple parachute pattern in sizes 16–18, matched roughly to whatever’s hovering over the water, will pick off risers in the flats and along the foam lines. Keep leaders long and tippet light—these fish see a lot of pressure. A couple of local hot spots to focus on: - Below Yellowtail Dam through the first several miles: classic Bighorn riffle‑run structure, cold and consistent tailwater flows, and heavy concentrations of trout. Work the drop‑offs and inside seams. - The stretch around Three Mile and down toward the Bighorn Access: softer banks, good shelves, and more room to spread out from the crowds. That mid‑river bucket water has been giving up some bigger browns in the evenings. Overall, if you get out early, stay flexible, and keep your bugs or hardware near the bottom with a natural drift, you’re going to stay busy. The river’s in good shape, the fish are happy, and it’s a fine time to be on the Bighorn. Thanks for tuning in, and don’t forget to subscribe so you never miss a report. This has been a quiet please production, for more check out quiet please dot ai. Great deals on fishing gear https://amzn.to/44gt1Pn