Top 5 Montana Rivers Fishing This Week | July 2026

The Big Hole River is currently flowing at 864 cfs (normal) with a stable trend. Flows are fishable today. Water Temperature: 67°F (caution). The Verdict: Excellent Conditions This week’s forecast shows temperatures ranging from 69-87°F. Calm winds make indicator nymphing more effective.

Insect Activity: With no big mayfly or caddis emergence lighting up the water this week, Big Hole trout are keying on the everyday grocery list — scuds, sowbugs, and caddis larvae tumbling through the cobble, best matched with a #14-16 Green Caddis Larva or Soft Hackle Hare’s Ear. Come mid-afternoon, when temps push toward 91°F, watch the grassy banks for hoppers; a #10 Thunder Thighs Hopper or Dave’s Hopper is drawing consistent looks as grasshoppers get more active in the heat. Big attractor patterns like the #10 Atomic Stone and Water Walker are still worth a swing through the faster riffles where fish hold to intercept whatever the high flow pushes past them.

Where to Fish: At 864 cfs and running high in its range, the Big Hole is pushing good current through the riffles above Wise River — work a nymph rig with a Pat’s Rubber Legs dropper through the deeper slots where trout stack up out of the main push. Because water temps are already flirting with 67°F, plan your day around the Hoot Owl closure here: fish hard in the cooler morning hours and be off the water by 2pm, then scout evening hopper water along the grassy cutbanks for tomorrow’s first cast.

Gear Tip: Start with a streamer rig in softer edges. Switch to a two-fly nymph rig and a yarn indicator as flows settle. A 9-foot 5X leader with light tippet keeps the rig natural in these flows.

Presentation: Start shallow, then add weight or depth as you move into deeper runs and pockets. Use longer drifts to cover tailouts and seam water.

Regulations: Big Hole River — regulations vary by reach (2026 MT regulations): river-wide, catch-and-release for arctic grayling (the Big Hole holds Montana’s last fluvial Arctic…

The Bitterroot River is currently flowing at 615 cfs (normal) with a falling trend. Flows are fishable today. Water Temperature: 62°F (warm). The Verdict: Excellent Conditions This week’s forecast shows temperatures ranging from 74-92°F. Calm winds make indicator nymphing more effective.

Insect Activity: The Bitterroot at Darby is in that classic summer lull between hatches — nothing’s popping in big numbers, so fish are opportunistic feeders keyed on caddis and stonefly nymphs tumbling along the bottom. A #14-16 Elk Hair Caddis or Green Weenie worked as a searching pattern will draw looks, but the real action right now is topside: with highs pushing 92-95°F, hoppers and ants along the banks are the call, so tie on a #10 Chubby Chernobyl or #12 Hippie Stomper and don’t be shy about slapping it tight against the willows.

Where to Fish: Flows are sitting mid-range at 615 cfs with water running warm (62°F) and trending up, so target the faster riffles and current seams where oxygen levels stay higher and fish are more willing to chase. Wade fishing is comfortable at this level — work the breaks below riffles with a dry-dropper rig, and save the slower, smoother runs for early morning before the day heats up and the fish get lockjaw.

Gear Tip: Start with a streamer rig in softer edges. Switch to a two-fly nymph rig and a yarn indicator as flows settle. A 9-foot 5X leader with light tippet keeps the rig natural in these flows.

Presentation: Start shallow, then add weight or depth as you move into deeper runs and pockets. Use longer drifts to cover tailouts and seam water.

Regulations: Standard Montana FWP fishing regulations apply. Valid fishing license required. See https://fwp.mt.gov/fish/regulations.

The Clark Fork is currently flowing at 781 cfs (normal) with a stable trend. Flows are fishable today. The Verdict: Excellent Conditions This week’s forecast shows temperatures ranging from 76-94°F. Calm winds make indicator nymphing more effective.

Insect Activity: No dominant hatch is popping on the upper Clark Fork this week, so nymphing the subsurface buffet is the percentage play — a #14-16 Caddis Larva or Czech Nymph fished deep will find fish holding in the heavier current. As afternoon temps climb into the mid-90s, don’t overlook the bank blitz: grasshoppers are getting bold in the streamside grass, and a #10-12 Chernobyl Ant or Amy’s Ant slapped tight to structure is drawing some of the most confident eats of the week.

Where to Fish: At 781 cfs and trending slightly higher, the Clark Fork below Drummond is running full but very fishable — focus on the deeper runs and current seams where this stretch’s browns (typically 12-16 inches, with trophy potential past 20) hold out of the main flow. With no clarity issues reported, working the softer edges in early morning light before the heat and boat traffic pick up can turn up some of the day’s best eats.

Gear Tip: Start with a streamer rig in softer edges. Switch to a two-fly nymph rig and a yarn indicator as flows settle. A 9-foot 5X leader with light tippet keeps the rig natural in these flows.

Presentation: Start shallow, then add weight or depth as you move into deeper runs and pockets. Use longer drifts to cover tailouts and seam water.

Regulations: Clark Fork River, upper reach (Warm Springs downstream to the Rock Creek confluence near Clinton): standard Montana FWP Western District regulations apply — the…

The Flathead River is currently flowing at 8950 cfs (normal) with a stable trend. Flows are fishable today. Water Temperature: 62°F (warm). The Verdict: Excellent Conditions This week’s forecast shows temperatures ranging from 71-89°F. Calm winds make indicator nymphing more effective.

Insect Activity: Big water, subtle hatches this week on the Flathead at Kalispell — trout are working the margins and slower current seams for caddis and attractor patterns rather than any one emergence. A #14 Elk Hair Caddis or #14 Soft Hackle Hare’s Ear covers the caddis angle, while a #10 Stimulator doubles as both attractor and hopper imitation as grasshoppers start showing up on the warm banks. With water running warm at 62°F, fish the first and last light windows when insect activity and feeding both pick up.

Where to Fish: This is a big-river week — flow is running very high at 8,950 cfs, near the top of its typical range, so this isn’t the stretch for wading deep. Stick to the soft edges, back eddies, and slower side channels where trout shelter from the main current, and lean on a drift boat if you want real coverage; the sheer volume of water means fish are concentrated in predictable slack-water lies rather than spread evenly across the river.

Gear Tip: Start with a streamer rig in softer edges. Switch to a two-fly nymph rig and a yarn indicator as flows settle. A 9-foot 5X leader with light tippet keeps the rig natural in these flows.

Presentation: Start shallow, then add weight or depth as you move into deeper runs and pockets. Use longer drifts to cover tailouts and seam water.

Regulations: Standard Montana FWP fishing regulations apply. Valid fishing license required. See https://fwp.mt.gov/fish/regulations.

The Middle Fork Flathead River is currently flowing at 2880 cfs (normal) with a falling trend. Flows are fishable today. Water Temperature: 58°F (prime). The Verdict: Excellent Conditions This week’s forecast shows temperatures ranging from 73-91°F. Calm winds make indicator nymphing more effective.

Insect Activity: No hatch is popping on the Middle Fork this week, but that’s typical for this cold, clean wilderness water — the resident cutthroat and rainbows are opportunistic dry-fly eaters, so a searching attractor like a #10 Stimulator or #14 Soft Hackle Hare’s Ear will draw plenty of looks. Remember gear here is single-hook only, so crimp or clip any stinger hooks off your hopper patterns before you start; a #10 Chernobyl Ant fished solo along the banks is a great bet as terrestrials become more active in the heat.

Where to Fish: At 2,880 cfs and running high but still within a healthy range, with water sitting at a prime 58°F, the Middle Fork is fishing about as well as it gets — this is faster, technical pocket water, so target the seams behind boulders and the tailouts of riffles where 8-12 inch cutthroat (with the occasional fish up to 18 inches) tuck in tight. Wade carefully given the current push, and remember this is single-hook-only water, so leave any treble-hook attractors at home.

Gear Tip: Start with a streamer rig in softer edges. Switch to a two-fly nymph rig and a yarn indicator as flows settle. A 9-foot 5X leader with light tippet keeps the rig natural in these flows.

Presentation: Start shallow, then add weight or depth as you move into deeper runs and pockets. Use longer drifts to cover tailouts and seam water.

Regulations: single hook