Fall midge and BWO windows set the tone on Montana's rivers

What's biting

What's next

With the Full Moon overhead, expect bright nights and a slower dawn bite. The better window is likely late morning through mid-afternoon, once water temps edge up a degree or two and small insects start to move.

Flows look steady, so wading access should hold, though the larger readings near 1,400 cfs call for careful footing. Gink and Gasoline (fly) points to tiny midge patterns for late fall, and Trout Unlimited's "let it ride" tip is useful when a drift lands off the feeding lane: leave the fly alone before pulling it off the water.

Flylords Mag highlights the last dry fly opportunities before winter, so a few quiet days of sun and light wind could turn on short, surface-oriented feeding. Brown Trout in the cooler stretches should move toward slower, deeper runs, where a sculpin or streamer can draw a strike. MidCurrent also lists small midge and stillwater patterns as part of the current fly-tying lineup.

Context

Late October is typically the transition from fall hatches to winter midge fishing across Montana's trout water. Water in the mid-40s is on schedule for this time of year, with Brown Trout often finishing the fall pre-spawn feed and settling into holding water. Crowds usually thin out, so patient anglers tend to find open river and consistent afternoon rises. Check state regs for any seasonal closures on spawning reaches before heading out.