The pre-runoff window is closing fast in mid-March 2026. Here's exactly where, when, and how to catch your first Yellowstone cutthroat on the fly.

Ice and slush have mostly melted, but the Yellowstone River is still very cold and fish are sluggish. Nymphing is the most effective approach right now; if you throw streamers, plan on a slow-motion strip or swing. Watch for spotty midge hatches depending on wind, and pay close attention to forecasts, wind, and potential ice shelves at ramps. Current flow: 1,260 CFS. Full fly pattern list included.

Montana’s late-winter fly fishing has been unusually steady in 2026, with mild temperatures keeping conditions stable. Rising Trout Fly Fishing Outfitters reports solid clarity, consistent flows, and trout feeding more predictably than typical for this time of year—especially on subsurface presentations.