It has cooled way off and is looking like winter on Montana’s Bighorn River. If you're willing to brave the cold, the fishing is still hot. Nymphing is most productive but there is still some streamer action to be had here and there.
Try fishing a red worm as your top fly followed by a small Midge or Mayfly pattern. Micro Mays, Zebra Midges, and small dark Perdigons have been the ticket. Focus your fishing on the slowest deepest water you can find, usually around 8 feet. Add some split shot to make sure you get down quickly. Anglers have also been doing well slow stripping streamers.
Red San Juan Worm
Brown/Black Pat's Rubberlegs
Rainbow Spanish Bullet
Orange Scud
Sparkle Minnow