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May 2021 Montana Fly Fishing Forecast

May fly fishing on the Yellowstone River

Montana Fly Fishing in May 2021

May is right around the corner and with it our anglers and guides will kick-off the prime Montana fly fishing season. As water temps climb out of winter lows, some of the first great hatches of the year will arrive on our Montana rivers. Great hatches mean great dry fly fishing.

The mother’s day caddis hatch on the Madison River, Yellowstone River, and Missouri River is usually the star of the show early-mid May. This hatch gives a whole new meaning to the term “blanket hatch” with mats of caddis piling up in every river eddy and trout rising to take them. Mixed in on overcast days anglers will also find hatches of Blue Winged Olive (BWO) mayflies continue on through the middle of the month. Anglers with a keen eye will also find March Brown mayflies, skwala stoneflies, and even a few early season terrestrials mixed in as water flows come up.

Spring run-off on our area freestone rivers has held off for now but with day time highs in the 70s it is a matter of days before the Yellowstone River, Gallatin River, Jefferson River, and other area freestone rivers run high and muddy. With that anglers in Bozeman, MT will find the best fly fishing on the Lower Madison River, Upper-most Madison River, Paradise Valley Spring Creeks, and private water lakes through late-June. Yellowstone National Park opens for fly fishing the Saturday of Memorial day weekend and is a great option for wade fishing later in the month of the Firehole and Gibbon Rivers.

Anglers fly fishing on the Missouri River near Craig, MT will be treated to some of the best fly fishing of the year through the month of May. The Missouri River tailwater is not affected by spring-run off due to snowmelt and projected flows below average for 2021 should make for excellent dry fly fishing. The nymphing on the Missouri River is always some of the most productive of the year with high catch rates and the largest average sized trout of any river in Montana. We are also hopeful that lower flows could make for some of the best streamer fishing in recent history.

Montana Fly Fishing Trips in May 2021

Our Montana fly fishing guides are looking forward to a great May 2021 with anglers able to safely travel and enjoy Montana fly fishing trips after our operations were closed for April and limited in May of 2020. We do still have good guide and lodging availability for anglers planning a last-minute Montana fly fishing trip. We offer all-inclusive guided fly fishing and lodging packages with the Missouri River Ranch that make for a truly incredible trip.

Looking ahead past May guide and lodging availability is extremely limited from June 1- August 15. Anglers interested in booking a Montana fly fishing trip in Bozeman and on the Missouri River during this time frame can contact our outfitter to start the planning process.

We are looking forward to another great season of fly fishing in Montana, see you on the water soon!

Notes From Downstream

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