Fishing Report
Grass Lake Fishing Report
Okauchee Lake, WI
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Modeled from live National Weather Service data as of Sep 1, 2026 at 2:57 PM CDT, plus solunar and sun/moon times computed in-house. This is a computed report, not an eyewitness catch report.
43.112168, -88.416086
Est. water temp
87.8°F
v1 estimate from air temperature — not a sensor reading
Notes from anglers
Imported from GNIS. Nearest town: Okauchee Lake (Waukesha County, WI).
Today’s bite
Largemouth Bass fishing report
Best window today: 8 PM (Excellent · 87/100)
See the full forecast →Species on record
- Black Crappie — listed for this lake by category, not by name · Present
- Bluegill — listed for this lake by category, not by name · Present
- Pumpkinseed — listed for this lake by category, not by name · Present
- Rock Bass — listed for this lake by category, not by name · Present
- Yellow Perch — listed for this lake by category, not by name · Present
Species tagged “Group” were listed by the state under a category (e.g. “Panfish”) for this lake, not an individual-species survey.
Species detail
How to catch them at Grass Lake
Black Crappie feed most actively at Dawn and Dusk, when activity runs about 16% above the daily average across all four light windows.
Typical Summer depth: 10-20 ft
Black Crappie fishing report →Bluegill feed most actively at Dawn and Dusk, when activity runs about 33% above the daily average across all four light windows.
Typical Summer depth: 10-20 ft
Bluegill fishing report →Largemouth Bass feed most actively at Dawn and Dusk, when activity runs about 21% above the daily average across all four light windows.
Typical Summer depth: 8-20 ft
Largemouth Bass fishing report →Northern Pike feed most actively at Dawn and Dusk, when activity runs about 27% above the daily average across all four light windows.
Typical Summer depth: 6-20 ft
Northern Pike fishing report →Pumpkinseed feed most actively at Daytime, when activity runs about 33% above the daily average across all four light windows.
Typical Summer depth: 3-10 ft
Pumpkinseed fishing report →Rock Bass feed most actively at Dusk, when activity runs about 22% above the daily average across all four light windows.
Typical Summer depth: 5-15 ft
Rock Bass fishing report →Yellow Perch feed most actively at Dawn and Dusk, when activity runs about 30% above the daily average across all four light windows.
Typical Summer depth: 10-25 ft
Yellow Perch fishing report →
Location
Grass Lake · 43.1122, -88.4161
Map data © OpenFreeMap, OpenMapTiles, OpenStreetMap contributors
Nearby
Other lakes nearby
Read next
Guides & reports for these species
FAQ
Common questions
What fish are in Grass Lake?
State surveys have confirmed Largemouth Bass and Northern Pike in Grass Lake.
When's the best time to fish Grass Lake?
Black Crappie feed most actively at Dawn and Dusk, when activity runs about 16% above the daily average across all four light windows. Check today's bite forecast for Grass Lake to see the best window for current conditions.
Where is Grass Lake?
Grass Lake is near Okauchee Lake, WI, at 43.1122, -88.4161.
Plan your trip to Grass Lake
Get the hour-by-hour bite forecast and the best times to fish Grass Lake, scored against live National Weather Service weather for this exact spot — showing what every input contributed and how well the evidence supports it.