We are almost out of the arctic blast on Montana’s Bighorn River. The next few days are calling for highs in the single digits and the negatives but next week the forecast flips a 180 with sun and highs in the forties. Nymphing will be most productive but the streamer bite should improve and there is a chance for a Midge hatch here or there.
Once things warm back up the fly menu will remain the same. A red Worm is still a great lead fly option followed by a Micro May, Zebra MIdge, Or black or olive Perdigon. Scuds and sowbugs have also been getting some love. Focus your fishing on the deep slow water. The deep buckets out in the middle have been the ticket lately. Make sure to add some split shot as some of those runs can be very deep. If you're itching to strip or swing some streamers, keep it on the smaller side and fish them low and slow. Skittish Smolts, Geisha Girls, and Sparkle Minnows are a few staples.
Red San Juan Worm
Brown/Black Pat's Rubberlegs
Rainbow Spanish Bullet
Orange Scud
Sparkle Minnow