A crisp, open sky after dark, with a busy WNW wind on the open water and a rising glass. Expect most activity at Grass Lake around inflow corners and shaded margins. Set the alarm around the morning. Stay mobile and follow the activity. Shortening days concentrate the feeding into fewer hours.
The bites are average now
Night
Grass Lake belongs to Waupaca County, Wisconsin. Elevation runs to 988 feet. It runs to roughly 34 acres — big enough to hold fish away from the bank, small enough to learn. A shoreline of some 1.1 miles keeps the choices simple. Iola is the closest place, 4.7 miles off. Amherst lies 12 miles off, Manawa another 13 miles. A county line runs close by, so local bylaws can differ within a short drive.
Depth figures are not published for this one. A natural lake fishes on cover, and cover here means weed and timber. Read the surface for the wind lane, then fish the edge of it. Public occurrence data for Waupaca County names brown trout, flathead catfish, rainbow trout, common carp and bluegill. The county list is broader than any single water. Grass Lake gives up its fish to patience rather than distance.
The warm month here averages 70°F; the cold one sits at 14°F. A hard winter is normal, and the thaw brings a strong few weeks. Ice is part of the season here, ending near early April. Average temperatures cross freezing around early April in spring and again near early December in autumn. Look to early summer and the first cool weeks of autumn. Plan around that when you fish Grass Lake.
Our records carry no access rule either way. Records list it as a natural water body rather than an impoundment. Formal access is not mapped, so the last stretch is likely on foot. Bass water: a Texas-rigged worm near cover, a spinnerbait when you need to cover ground. Look for a notice board at the entrance. Some stretches are reserved and marked as such on the ground. For a change of water, North Lake is 0.5 miles distant. The position on Grass Lake is worth confirming on the day.
68%
The bites are average 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 |
| 8.2 | 10.8 | 11.6 | 12.1 | 9.2 | 9.3 | 8.5 | 9.4 | 9.2 | 11.6 | 13.7 | 13.9 | 14.6 | 14.4 | 14.8 | 13.5 | 10.4 | 8.2 | 7.5 | 7 | 5.5 | 5.1 | 5 | 5 |
| 38° | 39° | 40° | 40° | 40° | 41° | 40° | 40° | 43° | 47° | 50° | 52° | 55° | 56° | 56° | 55° | 54° | 51° | 48° | 46° | 43° | 41° | 39° | 38° |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 29.9 | 29.88 | 29.87 | 29.86 | 29.86 | 29.86 | 29.86 | 29.88 | 29.89 | 29.89 | 29.88 | 29.88 | 29.87 | 29.87 | 29.87 | 29.89 | 29.9 | 29.93 | 29.94 | 29.96 | 30 | 30 | 30.02 | 30.03 |
| 92 | 90 | 92 | 93 | 97 | 95 | 97 | 96 | 89 | 78 | 70 | 65 | 58 | 56 | 54 | 55 | 57 | 62 | 69 | 73 | 80 | 84 | 87 | 90 |
Sam
AI Fishing Assistant for Grass 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