Smallmouth and walleye building as Michigan's summer weedline season kicks in

What's biting

What's next

With the First Quarter moon on June 22 and midsummer conditions taking hold, the most productive bite windows over the next several days will be early morning and early evening, when lower light levels and cooler temperatures trigger feeding. Midday sessions on both rivers and near-shore Great Lakes can slow considerably as solar input peaks.

On the Grand River, if flows hold near 3,160 cfs or continue a gradual seasonal decline, wade access along gravel bars and rocky runs will be good to improving through the week. Smallmouth bass are the prime target in the mid-river corridor; tube jigs, soft-plastic crayfish imitations, and inline spinners worked along rocky bottom are the textbook summer setup. Weed edges where current seams meet aquatic vegetation are worth probing for both bass and walleye.

Fishing the Midwest recommends focusing on weedline structure for walleye across the Midwest right now, and Great Lakes anglers can apply that logic to Saginaw Bay, Lake Erie, and other near-port shallow-water zones. The productive approach: troll or drift crawler harnesses along inside weedline edges in 8–15 feet during evening windows when walleye push shallow to feed. This is typically the peak weedline window for walleye across Michigan's Great Lakes fisheries, running from late June through mid-July before summer heat builds.

For near-shore Great Lakes smallmouth, rocky shoals and points that warm faster than open water will concentrate fish. Crawfish are the primary forage in late June, making jigs and crayfish-imitation plastics in brown, orange, or olive a reliable starting point. Live-bait presentations remain a viable option based on the forum account circulating on Michigan Sportsman.

Weekend planning note: check the MI DNR Weekly Fishing Report for region-specific updates before heading out. The First Quarter moon supports stronger morning and evening action over midday. River temperatures are unconfirmed from gauge data this cycle, so verify locally before committing to a long drive.

Context

Late June on Michigan's Great Lakes and the Grand River is historically a clean transition into summer's most structured fishing patterns. By the third week of June, walleye, smallmouth, and yellow perch have typically wrapped their spawning cycles and are dispersing to summer holding areas: walleye pushing to weedline breaks and mid-depth structure, smallmouth resettling onto near-shore rocky shoals and points, and perch aggregating over deeper flats as water stratifies.

The Grand River's 3,160 cfs reading is consistent with typical early-summer conditions on this river. Spring peak flows on the Grand regularly climb well above that mark through April and May before receding; a reading in the low 3,000s in late June suggests the river is working down toward its late-summer baseline, progressively opening wade stretches through July.

Direct week-over-week comparisons to prior Michigan seasons are not available here — the full body of recent MI DNR Weekly Fishing Reports was truncated and could not be parsed for specific regional catch data. Anglers should consult the DNR directly for any early- or late-season outlier notes by region.

Fishing the Midwest's assessment that the 2026 open water season is in full swing and weedline patterns are the priority structure aligns with a summer that appears to be tracking a fairly normal seasonal progression for Michigan. The near-port smallmouth activity reported in forum chatter and the weedline walleye advice emerging from regional fishing blogs both fit what typically unfolds in the last week of June, and conditions should hold and strengthen through early July before summer heat begins pushing fish deeper into thermocline-influenced zones.