Low, flat cloud sitting over the water, with just enough S wind to ripple the surface as pressure builds. On Grandfather Lake, work structure within a cast of the bank first. The strongest window is the night. Push the good hours hard and rest through the dead ones. Autumn fish are feeding up and less fussy than in summer.
The bites are poor now
Night
Marinette County, Wisconsin, is where Grandfather Lake sits. Mixed forest runs right down to the water. The water measures roughly 20 acres, so nothing here is far from anything else. The nearest town is Kingsford, 22 miles away. The nearest city of size is Green Bay, 71 miles away. The county line is nowhere near, so one local authority covers the water.
We hold no survey for this water; read the slope of the shoreline instead. A soft bed grows weed late into autumn, which keeps fish shallow. A natural lake fishes on cover, and cover here means weed and timber. Species logged across Marinette County include brown trout, rainbow trout and largemouth bass. Species recorded across the county may be limited to a few waters. Treat Grandfather Lake as a water to read rather than to cover.
The year swings from about 11°F in January to roughly 66°F in July. Hard water is a season in its own right here. The lid usually goes in mid April, which opens the strongest weeks of the year. The lid tends to go about mid April and return around late November. From the thaw to midsummer the fishing improves week by week. The season on Grandfather Lake rarely departs from it.
The access position is unclear from public sources. Mapping is blank for access, so scout the approach before committing the car. Largemouth respond to soft plastics tight to cover; go weedless where the growth is heavy. Some banks are open only from a marked point. Check whether bait restrictions apply before you buy any. If the gate is shut, Benson Lake at 1.4 miles is the nearest alternative. Ask locally about Grandfather Lake if anything is unclear.
21%
The bites are poor now
| 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 7.4 | 7.1 | 7.7 | 7.2 | 8.2 | 7.4 | 7.4 | 6.1 | 7 | 7.1 | 7.4 | 9 | 8.6 | 7.7 | 7.5 | 7.6 | 7.7 | 7.5 | 8.2 | 7.5 | 6.9 | 7 | 6.8 | 6.8 |
| 62° | 62° | 62° | 62° | 61° | 60° | 60° | 59° | 59° | 59° | 60° | 61° | 60° | 60° | 61° | 60° | 58° | 56° | 55° | 54° | 53° | 52° | 51° | 50° |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 29.68 | 29.67 | 29.66 | 29.64 | 29.62 | 29.61 | 29.6 | 29.59 | 29.59 | 29.58 | 29.56 | 29.55 | 29.52 | 29.51 | 29.49 | 29.48 | 29.5 | 29.5 | 29.51 | 29.51 | 29.5 | 29.51 | 29.52 | 29.52 |
| 91 | 91 | 91 | 91 | 90 | 91 | 92 | 93 | 91 | 91 | 89 | 86 | 86 | 86 | 84 | 83 | 83 | 84 | 85 | 85 | 86 | 86 | 86 | 86 |
Sam
AI Fishing Assistant for Grandfather Lake
Morning
Afternoon
Evening
Best bite time
Best bite time
Best bite time
Best bite time
Best bite time
Best bite time
Best bite time