Late Fall Bighorn Bananza: Browns, Bows, and Battling the Chill

Artificial Lure here with your November 11th, 2025 report from Big Horn, Montana—tight lines and cold hands as fall sets in deep across the valley! Local sunrise slipped in at 7:05 AM and the sun’ll drop at 4:41 PM, so you’ve got a short window, but it’s prime light for moving browns and hungry rainbows. According to Don Day’s weather forecast, we’re looking at crisp, clear skies with a high near 59°F, lows dipping to 29°F overnight. Winds are gentle; bring a light shell, but no need to duck gale-force gusts out here. Last week's snow in the Bighorn Mountains has iced up the upper timber, but the river and lower valley remain wide open[2][8]. The Bighorn River itself is in prime late fall form. Flows are steady, the water’s clear, and fish are showing real appetite. Mark Raisler from Headhunters Fly Shop notes reliable nymphing, improving streamer action, and a bit of surface activity to keep things spicy. The blue-winged olives (BWOs) are still popping on overcast afternoons, and trout aren’t shy. Browns are aggressive, starting to move quick with the cold—this is big fish season if you’re hunting trophies[1]. As for what’s biting? The best action lately has been on medium-size rainbows and healthy browns, with some anglers reporting 20-fish afternoons from Soap Creek to Three Mile Access. Pink and red San Juan worms, small black and olive streamers, and classic Pheasant Tail nymphs have led the charge. Woolly Buggers (in olive or black) are a local legend; strip one by the cutbanks and you’re in for a brawl with a brown that’s been eating well this autumn. No tides to mess with—Montana’s rivers run by melt and rain, not the moon, but the late fall bump in flows after last week’s light rain triggered a mini-feed. Yesterday, one local drift guide saw a half dozen browns over 18" and more than a dozen solid bows from the Afterbay downstream before noon. Midges and BWOs drove most of the dry action. If you’re throwing hardware, small silver spoons and Mepps spinners have picked up trout and the occasional wily walleye near deeper runs and eddies. Bait anglers are finding success on nightcrawlers and powerbait, especially off the gravel bars near Bighorn Access. This week also saw a couple of hefty carp pulled from the sloughs—kids are having a blast with dough balls and leftover worms. Lure and bait selection for today: - *Best flies*: Pink or red San Juan worm, Pheasant Tail nymph, olive/black Woolly Bugger, BWO dries #18-20. - *Best lures*: Small silver or gold spoons, inline spinners in red or white. - *Bait*: Nightcrawlers, powerbait in chartreuse or orange, corn for the carp and perch. Hot spots right now: - *Three Mile Access to Mallard’s Rest*: The classic wade stretch—trout are stacked in the seams and riffles. - *Soap Creek confluence*: Big browns moving in from deeper water. Dead drift a worm or strip a Bugger at dusk. Not much left to the season but the fishing is hot—dress warm and fish slow in the mornings, then go aggressive w This content was created in partnership and with the help of Artificial Intelligence AI.