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Saint Clair River (Michigan) — a popular fishing spot. About 14 km long. A smart bite calendar — moon phase, atmospheric pressure, and weather combined into an hourly fish-activity forecast for the coming days.
Other nearby waters
The course runs nearly straight: there are few bend pools, and the structure to look for is riffles and scour holes.
Wednesday, October 21
Work the cover — snags, weed edges, hole entrances; retrieve the lure with pauses.
Saint Clair River — Wednesday, October 21
The bite is strong — fish are active. Pressure is rising — activity tends to be more subdued. Peak 07:00–09:00 and 17:00–19:00.
The computed water temperature is around 51 °F — colder than the 57–75 °F comfort range for Black crappie: the fish conserves energy and takes more cautiously.
Black crappie works the twilight: the peaks are pinned to sunrise and sunset — their times are in the sun-and-moon card above.
Pressure is flat: it moves no more than 0.03 inHg over the day, so the weather isn't shifting today's bite.
One more input — the moon's feeding windows: within their hours the score sits higher than across the rest of the day. The window times are in the “Solunar feeding periods” card below.
October is an active season for Black crappie here.
These are the same values the bite curve above was computed from. How the forecast works
Cloudy · feels like +56°
The day is 3 min shorter than yesterday.
Sunshine hours count direct sun only — cloud cover cuts it, so it is shorter than daylight.
Geomagnetic fieldG1 geomagnetic storm, Kp 4.7
Kp index — NOAA forecast. Not part of the bite score: catches show no link between geomagnetic storms and the bite.
The windows are set by the moon's transit and rise, and the forecast above already accounts for them: within these hours the bite score sits higher than across the rest of the day, while the day's overall level still comes from the catch-calibrated model.
What are solunar periods?Michigan: the months when each species peaks and when it goes quiet. The current month is outlined.
| Fish | January | February | March | April | May | June | July | August | September | October | November | December |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Steelhead | peak | peak | active | fair | fair | active | peak | peak | peak | peak | peak | peak |
| White crappie | active | active | peak | peak | active | active | fair | fair | active | active | active | active |
| Black crappie | active | peak | peak | peak | active | fair | fair | fair | active | active | active | active |
| Lake trout | peak | peak | peak | active | active | fair | slow | fair | active | peak | active | peak |
| Brook trout | slow | slow | fair | active | peak | peak | active | active | peak | peak | fair | slow |
| Muskellunge | slow | slow | slow | active | peak | active | active | peak | peak | peak | fair | slow |
| Pike | fair | fair | fair | fair | fair | active | active | active | peak | peak | peak | active |
| Walleye | slow | slow | slow | active | peak | active | active | peak | peak | peak | fair | slow |
| Whitefish | slow | slow | fair | active | peak | active | active | active | peak | peak | fair | slow |
| Largemouth bass | slow | slow | slow | active | peak | peak | peak | peak | active | fair | fair | slow |
| Rainbow trout | slow | slow | fair | active | peak | peak | active | active | active | fair | slow | slow |
| Smallmouth bass | slow | slow | slow | fair | active | active | active | peak | peak | active | slow | slow |
| White bass | slow | slow | slow | fair | active | active | active | peak | peak | active | fair | slow |
| Yellow perch | slow | slow | slow | fair | active | active | active | peak | peak | peak | fair | slow |
| Carp | slow | slow | slow | slow | active | peak | peak | peak | active | slow | slow | slow |
| Coho salmon | slow | slow | slow | slow | fair | active | peak | peak | peak | active | fair | slow |
| Bluegill | slow | slow | slow | slow | fair | peak | peak | peak | active | slow | slow | slow |
| Chinook salmon | slow | slow | slow | fair | active | peak | peak | active | fair | slow | slow | slow |
| Burbot | fair | fair | fair | slow | slow | slow | slow | slow | fair | peak | peak | active |
| Channel catfish | slow | slow | slow | slow | fair | active | peak | peak | fair | slow | slow | slow |
Blue check: this species appears as a catch in reports for this waterbody.
Work the cover — snags, weed edges, hole entrances; retrieve the lure with pauses.
Saint Clair River — Wednesday, October 21
The bite is strong — fish are active. Pressure is rising — activity tends to be more subdued. Peak 07:00–09:00 and 17:00–19:00.
Biting
Fish in 1 of 1 report · Mostly Muskellunge
Anglers have logged 1 fishing report here. Most commonly caught: Muskellunge. Peak season: July.