Things are turning to winter on Montana’s Bighorn River. If the cold doesn't scare you off the river should be fishing well as it is running mostly clear. Nymphing is your bread and butter right now but the streamer game has been decent as well.
Small Midge and Mayfly nymph patterns like a Micro May, Zebra Midge, or a dark colored Perdigon have been the ticket. Scuds and worms have also gotten some love lately. Focus your fishing on the deep slow runs out in the middle and add some split shot to ensure getting down quickly.
Streamer bite has been solid as of late. Anglers have been doing well fishing small flashy streamers like Sparkle Minnows and Skiddish Smolts. Like Nymphing, focus your streamer game on the deep slow runs.
Red San Juan Worm
Brown/Black Pat's Rubberlegs
Rainbow Spanish Bullet
Orange Scud
Sparkle Minnow